Iphone Definition and 92 Threads

The iPhone is a line of smartphones designed and marketed by Apple Inc. that use Apple's iOS mobile operating system. The first-generation iPhone was announced by former Apple CEO Steve Jobs on January 9, 2007. Since then Apple has annually released new iPhone models and iOS updates. As of November 1, 2018, more than 2.2 billion iPhones had been sold.
The iPhone has a user interface built around a multi-touch screen. It connects to cellular networks or Wi-Fi, and can make calls, browse the web, take pictures, play music and send and receive emails and text messages. Since the iPhone's launch further features have been added, including larger screen sizes, shooting video, waterproofing, the ability to install third-party mobile apps through an app store, and many accessibility features. Up to 2017, iPhones used a layout with a single button on the front panel that returns the user to the home screen. Since 2017, more expensive iPhone models have switched to a nearly bezel-less front screen design with app switching activated by gesture recognition.
The iPhone is one of the two largest smartphone platforms in the world alongside Android, forming a large part of the luxury market. The iPhone has generated large profits for Apple, making it one of the world's most valuable publicly traded companies. The first-generation iPhone was described as "revolutionary" and a "game-changer" for the mobile phone industry and subsequent models have also garnered praise. The iPhone has been credited with popularizing the smartphone and slate form factor, and with creating a large market for smartphone apps, or "app economy". As of January 2017, Apple's App Store contained more than 2.2 million applications for the iPhone.

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  1. EleSuki

    Can an iPhone placed inside a water tank receive wireless LAN signals?

    I've been considering some questions related to the properties of silicon carbide used in stealth fighter jets, which is known for its ability to absorb electromagnetic waves. Firstly, I would like to know if it is possible to have a sealed iPhone inside a 60cm water tank (using a Ziplock bag...
  2. OliverFroelich

    A Iphone Reflection has a pattern

    Hi all! I'm sitting in the office on what would normally be a dive day so I'm slightly over observant. The sun is coming in heavy through my window, and holding my iPhone I began playing with the reflection on my office wall it produced. The reflection at first was no different then any light...
  3. W

    IPhone Settings : Attempts at the Password before Locking Out

    A friend of mine has an iPhone 8 plus . Security seems over the top, requiring passwords at all levels. Are there any settings that determine the number of tries before locking? If so, where is it?
  4. L

    Charging an iphone with macbook charger

    So I can charge my iphone, with the 61W macbook charger using the USB-C interface. I think the battery won't draw more effect than it needs/is dimensioned for, so this works fine. Can i use any charger with an USB-C interface to charge my iphone? or does it only work with apple products? Or...
  5. jedishrfu

    IPhone zero-click Wi-Fi exploit: One of the most breathtaking hacks

    https://arstechnica.com/gadgets/2020/12/iphone-zero-click-wi-fi-exploit-is-one-of-the-most-breathtaking-hacks-ever/
  6. jedishrfu

    Who Knew the iPhone spans the ages

    A recent article on an 1860's painting of a girl with a prayerbook that looks suspiciously like an iPhone. https://boingboing.net/2020/11/16/woman-in-1860-painting-depicts-a-time-traveler-using-her-iphone.html Who knew iPhones would be so popular? :-) When you search for patterns you can find...
  7. Aurimas

    Is the iPhone mute button waterproof? How does it work?

    Hey, guys! I'm wondering, Iphone mute button, it's a slide switch and it's waterproof, can you explain me mechanism of it? Maybe with a drawing?
  8. Imager

    IPhone / iPad Message & Phone Sharing

    I just purchased an iPhone 11 pro max and I'm having difficulty pairing it with my old iPad pro 10.5". On both the pad and the phone when I attempt turn on messages, it wants me to upgrade to two factor security. Is there a way around the two factor identification? I tried the factor...
  9. K

    I restored my iPhone, but iTunes asks for a password

    Accidentally deleted a couple of notes from my iPhone and fortunately they were backed up by iTunes. When I try to restore the previous backup today, it stops and asks me for password. I don't remember i have set any password for that. Does this sound normal?
  10. K

    Content transfer between smartphones

    My old iPhone 5S is retiring. Today got my new LG G6. I am able to sync the contacts to G6 via Gmail. My question is how to transfer text messages, photos, notes and music from iPhone to G6? There are about 70G of data.
  11. G

    Electrocution by iPhone charger (involving a bathtub)

    This link: http://www.telegraph.co.uk/news/2017/03/17/man-died-charging-iphone-bath/ Briefly, a man was using his iPhone in the bath while he was charging it. He dropped it in and was electrocuted. How? Where did the mains reference come from - transformer? Optocoupler? Y-Class capacitor? I...
  12. N

    Issue about factory reset my iPhone

    I have a jailbroken iPhone 6 and will get it replaced with a new one. The problem is that i can't factory reset the device. Every time I tap the erase all content and settings on iPhone, the screen goes dark and flashing. When I forced the phone rebooted, nothing was deleted. This is really...
  13. Planobilly

    IPhone 7 and AM push button radios....how did we get here?

    Hi Guys, My old cell phone died so I got two new iPhone 7s, one for my wife and one for me. They were not free...lol Instead of talking to people, I now talk to my phone. I talk and it converts my redneck voice to text...lol No one actually answers their phone anymore anyway, so "leave a...
  14. I

    Changing iPhone Battery: Tips for DIY NiMH Replacement | 1810 mAh to 300 mAh

    So for a DIY project I'm doing, I want to replace my iPhone battery (about 1810 mAh, 3.7V) with a NiMH battery (300 mAh, 1.2V) but I need help getting past some of the problems (and maybe more). First of all. I've read that iPhone batteries are non-removable, is this true? I've also read that I...
  15. L

    Is There an iPhone App for Using Your Phone as a Light Sensor?

    Hi! I'm searching for an application for iPhone, similar to the Android App "Physics Toolkit Light Sensor", so I can use my iPhone as a light sensor. Does anybody know if there's such an app in the App Store? I'm not able to find one. Best regards Lasse
  16. A

    Waterproof iPhone case with speakers/microphone

    Hello, I'm building a waterproof iPhone case with small speakers/microphone on the front. The speakers have to be small but loud enough so I could hear them under the shower. What speakers and microphone would you recommend? How would you connect them? Alan
  17. M

    Which one earns more money: free iOS app or free iPhone app?

    Which one makes more money: free iOS app or free iPhone app?
  18. R

    Which is harder to crack: a smaller or larger screen?

    Is it harder to crack a smaller screen or a larger screen? Why? For example, if I hit an iPhone with a hammer, would it break more or less than if I did the same to an iPad? Would it change which is more safe if I put a screen protector on? The force would be the same in both cases but it...
  19. jtbell

    Do you really want a bigger smartphone?

    With Apple expected to announce a larger iPhone tomorrow, let's all brace for the... Attack of the Giant Cellphones! (CNN.com)
  20. W

    Android or iPhone: Which Do You Prefer?

    Hello, I would like to post a Researching post on here. Just want to know , What do you like ? 1. Android 2. iPhone Hope all are participate here. Thanks
  21. J

    Portable Phone Charger (Power Bank)

    I am interested in designing my own portable phone charger or power bank. I would ideally like to use a Li-Ion battery and be able to have interchangeable male connectors depending on what phone I have at the time (ie iPhone 4s, android, galaxy, etc). Can someone please provide a basic circuit...
  22. C

    Second small battery in a smartphone

    Hi guys, I'm Chris from Germany. First of all, I'm not an expert in science, biology or electrical engineering. But i would have this question to experts, that's why I'm here. Sorry if my question will sound "dumb" or "easy" but as i said, i don't have any knowledge in this field. Is it...
  23. J

    Quantum Bounce & White Holes: Could Black Holes Create Them?

    Does quantum bounce provide a solution by which black holes could on some other side of the universe or in another universe create white holes Sent from my iPhone using Physics Forums Jim P
  24. J

    White Hole Theory: Evidence in Our Universe

    Recent data in qm suggest black holes could decompress into a white hole on either our universe or another as such is there any evidence of white holes in our universeSent from my iPhone using Physics Forums Jim P
  25. V

    Understanding advanced technology

    The scenario is the following: A society that is less advanced than the one producing a certain technology is exposed to the latter. The person who finds the device/fragment in question is either a A, layman, a B, trained engineer or an C, inventor/visionary, and the technology might range...
  26. I

    Transformer Impedance: Primary Side & Secondary Load

    Hi, Since the primary side of a transformer is a closed circuit (like the cubical adapter for the iphone charger), it would make sense that even if my iphone wasn't plugged into the secondary, the primary would still draw power. I know this is the case for at least some adapters, because i...
  27. gfd43tg

    How Can I Achieve Uniform Lighting for iPhone Camera Photos?

    Hello, I am working on a project where I am trying to take a photo of paper that I insert into a slot of an iPhone cover that I created with a 3D printer. My goal in this stage of design is to be able to take a photo that will disperse the light evenly across so that the lighting is uniform...
  28. jk22

    Ssh on iPhone via 3G does not work

    I tried server auditor to connect to m'y laptop from an iPhone. It works only if it is through a wifi. Does anyone know if it is possible through 3G ? Thanks
  29. O

    Ancient Artifacts: Could They Prove Extraterrestrial Visitation?

    Not sure if I should post this question here or in the Materials & Chemical Engineering forum but I will give it a try. If I were to take several modern items, let's say an iPhone, a set of chrome vanadium steel wrenches and a stainless steel/titanium Smith & Wesson revolver and bury them...
  30. kyphysics

    Need Interest in Technology to Become Computer Programmer?

    Does a person need to have an interest in technology, in general, in order to be a (successful?) computer programmer? I ask, because I believe I saw this mentioned in another thread somewhere not too long ago and I've been looking into the computer programming field the past week. I think...
  31. mesa

    How accurate is the GPS on an iPhone?

    I need to know how accurate the GPS is on an iPhone. We had guests over this evening and one of their iPhones disappeared. Using the GPS tracker it shows up at a neighbor house two lots down :P
  32. M

    What iOS applications support Google Scholar?

    I'm looking for a native app of Google Scholar on my iPhone. However, I can't find out the best apps.
  33. G

    How do different materials interact with light?

    Could someone please clear this up for me. We have, Reflection (metal, mirror) Reflection (colour) Absorption (heat) Emission (heat) Transmission (glass) Sry but I use photoelectric effect to reference electrons absorbing photons of specific energies to be excited to higher energy levels, I...
  34. T

    Quantum Physics Science Advanced Project

    So, I love physics and math. I have my first Science fair coming up, and I've dreamed about this day since I was five. Putting my knowledge into work that my peers can judge, and maybe spark interest in Physics for someone else. What project could I do that is Quantum Physics or really any...
  35. S

    Help Understanding Black Hole Theories

    Hi, I think I have several misconceptions about the theoretical framework of black holes, I'm just not sure where my intuition (or, lack of) goes wrong. So sorry if this sounds really stupid, any help is appreciated. The scenario that I find confusing is what Alice sees when she throws Bob into...
  36. C

    Taking good notes fast - on computer? By hand? software?

    Hi, So I'm studying Chemistry and biology and I'd like to hear your advice on notetaking. Perhaps some of you can help me find some good software for taking notes faster? First let me paint the picture for you: Whenever I learn a new subject such as electrochemistry or Entropy etc., I like...
  37. Blackhawk4560

    Misc. DIY Electron Smasher: Questions & Answers

    Hello, Myself, along with some colleagues are planning, designing, and going to be constructing a particle accelerator. For now, we will be using electrons. Eventually we may look into using ionized hydrogen atoms (I.e. Protons), and switching the polarity of the magnets from + to -, but...
  38. B

    Looking for a Calculator App with Unit Functionality?

    Does anyone know of any calculator apps that can deal with units? I know I can do it on google search, but I was looking for something more like a calculator. I found this one: http://physyapps.com but it's only for iphone and mac. Thanks, Paul
  39. Feeble Wonk

    Decoherence relationship to the measurement problem

    Decoherence relationship to the "measurement problem" I have heard the argument that "decoherence" in quantum states causes the quantum collapse to occur, and that this solves the "measurement problem". But I'm still left with a nagging question... Does decoherence only produce quantum collapse...
  40. J

    Dx as change in distance vs dx as infinitesimal x?

    dx as change in distance vs dx as infinitesimal x? Why are they the same notation?Sent from my iPhone using Physics Forums
  41. J

    Why is gravitational potential energy defined at infinity?

    Why is gravitational potential energy defined at infinity? Like here on Earth there is Zero potential energy at the center of the Earth (if you could theoroeetically go there) so why not define it as 0 at zero distance from the force supplier instead of at infinity? I understand why the...
  42. J

    Electric flux textbook discrepancy ?

    Electric flux textbook discrepancy ?? my textbook says "q enclosed for the Guastian surface in a1 would be the positive charge enclosed by a1: the negative charge does contribute to the electric field at a1 but it is not enclosed by surface a1 and so is not included in q enclosed". ...…..;…...
  43. A

    Is the Inverse Element in Modular Arithmetic Unique?

    Question: Let n be a positive integer and consider x,y,z to be elements of Zn. Prove that if x . y = 1 and x . z = 1, then y = z. (Since working in Zn the sign '.' means "multiplication modulo n".) Conclude that if x has an inverse element in Zn, then the inverse element is unique. Attempt...
  44. B

    STK - Sim Tool Kit accessibility

    Hi PF, In general, one can enable VAS (Value Added Services) provided by subscriber via the STK (Sim Tool Kit). However, I think its actually tedious to open the STK, select the required VAS, confirm your selection via SMS every time. I would like to know, if it is possible to automate some...
  45. Z

    Internship for inexperienced students?

    Hello. I'm a Junior in Highschool and will be taking the CHSPE for early entry to begin a 2 year college in the fall. Are there any possible internships that someone with my (lack of) experience would be able to apply for? It could be book keeping or something nearly irrelevant so long as I'm...
  46. G

    Is there an adapter for small IC chips to fit on a PC board?

    I was going to start a project making a 16x16 led board( using sainsmart uno r3) and I had bought 2 ic chip w/ 16 I/I ports. But when I got it, they are a lot smaller then usual ic chip I get. Is there some sort of adapter for small to large that can be used in a PC board? Thanks(I'm fairly new...
  47. J

    Flow Chart of material to learn differential geometry

    I am a 3rd year mechanical engineering student at LSU, but my true interest lies in theoretical physics and mathematics (specifically general relativity and differential geometry). I've taken calculus 1,2,3, linear algebra, ordinary differential equations, number theory, discrete math, and...
  48. A

    What shapes inside a wireless wooden speaker can amplify sound?

    So, I need to make a wireless wooden speaker (no Bluetooth or anything, you just put the phone in and it makes it somewhat louder) for my phone (white iPhone 4 without a case if you wanted to get an idea of the dimensions and aesthetics). My design sketch as of now is a cube measuring roughly...
  49. U

    Apple Iphone 4: use siri while your phone is locked

    Hey to all you who are the owners of the iphone 4s with siri. I was freakin around on it early this morning and found out that you can use siri while your phone is locked. Siri will actually search the web for you without asking for a passcode, which will unlock your phone without a passcode...
  50. J

    What would crack easier? An iPhone 6 or an iPad air?

    If I took a hammer to each of the screens, which would crack first with a minimum amount of force? If I put a screen protector on it, would it change the answer of which one would crack first? I tried to pick two models which had similar frames. If the using different models actually makes it a...
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