AAPL Stock: 117.81 ( -0.22 )

Printed from

iPhone 4s suffering from buggy proximity sensors

updated 05:30 pm EDT, Mon June 28, 2010

Issue blamed on software

A number of iPhone 4 owners are experiencing problems with the device's proximity sensor, Apple's support forums reveal. The sensor is extremely important on an iPhone, since it shuts off the touchscreen when a person brings the phone to their ear. Without the feature a person can accidentally hit onscreen buttons, carrying the risk of muting or hanging up on a call.

In the glitch now being reported, a touchscreen may turn back on after very little movement, and even rapidly switch on and off. Some users have claimed success in resetting an iPhone's settings, but others have not, and have instead had to swap for a replacement at a local store. The issue is believed to be software-related, a matter of how quickly the sensor triggers.

The iPhone 4 has been plagued with a number of problems since launch, most notably a reception issue which at least appears to cause the device to lose signal if held a particular way. Apple has promised an update to resolve the situation, but has also insisted that people simply use a different grip. Complaints of discolored screens have meanwhile dwindled, which may back the claim of a bonding agent that had yet to evaporate.

by MacNN Staff



  1. jay3ld

    Joined: Dec 1969



    We are not supposed to hold the iPhone in either hand.

  1. jarod

    Joined: Dec 1969


    Thats what happens

    When you grow too fast and start losing focus!

    TAKE the bloody extra 10-15 minutes and properly test out this stuff before making a public mess!!

  1. nostrademas

    Joined: Dec 1969


    Plagued? hardly

    We all know that any new Apple product is going to hyped to death beforehand and then after launch a few people have a problem and the hype then makes it sound like it's everyone.

    If any consumer goods company sold 1.7 million units in the first weekend and didn't have a few returns for some reason then they'd be doing bloody well (manufacturing faults affecting batches are not unusual whether you're selling jeans, hosepipes or cars). It's normal. It's not "growing too fast" or any of the other c*** spouted on here. None of the issues so far are affecting all users, very far from it.

  1. Geoduck

    Joined: Dec 1969


    New Model's Disease

    Engineers do wonderful things but they can't see every possibility. This is why I never buy the first of any new model. I won't get a new model car, or computer, or whatever. There are always bugs that come out when real people use something as opposed to the engineers and testers.

    I will be getting an iP4, sometime this fall. By then the bugs will have been patched, and I will be able to get one without fighting the crowds.

  1. rosssanford

    Joined: Dec 1969


    iPhone G3S

    Same problem with iOS4 on a 3GS.

  1. chotty

    Joined: Dec 1969


    Reset all settings,

    and did a hard reboot, seems to have fixed it. Mine was constantly turning on Speakerphone while pressed against my cheek. This method fixed it for me. *I can also hold the lower-left of the antennae and watch the bars dip low, but it does not drop calls like my 3G. Much better reception, actually.

  1. facebook_Matthew

    Via Facebook

    Joined: Jun 2010


    iPhone Proximity Sensor

    I have noticed this issue. I hung up 2-3 times with my cheek before I realized what was going on and contacted Apple.

    Has anybody else had a problem with their supposedly "chemically reinforced & 20 times stronger than plastic" screen getting fine scratches? I haven't put anything resembling keys or anything else sharp near my iPhone 4 and I already see fine scratches on the front & the back!

    Comment buried. Show
  1. wrenchy

    Joined: Dec 1969



    Apple. It "Just Works".

    Rollllling on the floor laughing me arse off.

    Not to worry, there's always a Brigage-sized Army of Apple fanbois to make up excuses to defend Stevie-Boy. Nothing will change. Apple cranks out Sh1te, iFanbois still buy it. Stevie-Boy can't lose!

  1. pairof9s

    Joined: Dec 1969


    Re: ROFL!

    So enlighten us with which phone you use, wrenchy...let's see if that model is perfect...or perhaps the computer you use. Please let us know what company has the perfect product..much less is innovative enough to create a game-changer that everyone tries to emulate. In the meantime, 1.7 million iPhone 4 were sold by one company thru one carrier in one day.

    I've always said the only thing worse than a Fanboy is those who beetch about about worthless effort!!

  1. @okli

    Joined: Dec 1969



    i don't think wrenchy can use any cellphone ...
    as there isn't any coverage in his village anyway,
    all he can do is just to hang in a cyber coff.chop
    writing stupid coments...
    My iPhone4 like all my other apples:

Login Here

Not a member of the MacNN forums? Register now for free.


Network Headlines

Follow us on Facebook


Most Popular


Recent Reviews

Ultimate Ears Megaboom Bluetooth Speaker

Ultimate Ears (now owned by Logitech) has found great success in the marketplace with its "Boom" series of Bluetooth speakers, a mod ...

Kinivo URBN Premium Bluetooth Headphones

We love music, and we're willing to bet that you do, too. If you're like us, you probably spend a good portion of your time wearing ...

Jamstik+ MIDI Controller

For a long time the MIDI world has been dominated by keyboard-inspired controllers. Times are changing however, and we are slowly star ...


Most Commented