iPhone 4S keeps connecting and disconnecting

Question

Level 1

15 points

iPhone 4S keeps connecting and disconnecting

Hi guys,

Everything was ok yesterday but right now when I connect my iPhone 4S to my Macbook Pro Retina display (I've got it yesterday) left USB it keeps connecting and disconnecting. I'm on Lion latest update.

I've tested with another cable same result. Turned off and on both MBPR and iPhone 4S twice didn't help.

No the interesting part that may help: it works fine on my PC all three USB ports. It works on right USB port of my MBPR too. I've tested the left USB port (That has a problem) with other devices. I'm writing this post with an external keyboard plugged to this port. I've tested this port with my iPod Touch and it worked fine. Only happens with my iPhone 4S and this left USB port.

Any suggestion? Is it possible that the USB port not working well? Any way to assure it's fine?

Thanks alot.

iPhone 4S, iOS 5.1.1, It's iOS 6 Beta :) 16GB

Posted on Jul 24, 2012 7:12 AM

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Answer 1

brad805

Level 5

7,397 points

Jul 24, 2012 10:28 AM in response to Maziyar

Make Genius Reservation and take your equipment to Apple so Genius can figure this out. They have Demo iPhone 4S and Demo MacBook Pros which you can swap around to trouble shoot this perfectly. When it is figured out, they can then completely solve the problem, fix iPhone 4S, fix MacBook Pro or fix both.

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Answer 2

Maziyar Author

Level 1

15 points

Jul 24, 2012 9:57 PM in response to brad805

Thanks for reply,

I'm far from Apple Store. I'm in Malaysia and G bar here is like testing some simple stuff and they tell you they can't do it it has to go to Singapore.

I've tested the port with another iPhone 4. Works fine! Still has a problem with mine. The only differences here is mine is 4S and it has iOS 6 beta 3.

The other weird thing is, I plug my iPhone to the external Apple keyboard USB port and it works fine too! It only happens when I plug it to the USB port directly.

Is there any chance that the USB has some sort of config or settings for my device and it only set with that port? Any way that I can reset those configuration?

I know here is a user to user place but I'm looking for a solution or tips&tricks or even the same experience before I go to the Apple store.

Thanks.

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Answer 3

Jul 25, 2012 11:00 AM in response to Maziyar

Hello from Spain, I have exactly the same problem with the new MacBook Pro with Retina display (2.3,16GB,256GB). If I connect the iPhone 4S to the left port it becomes connecting and disconnecting randomly.

The right port it works perfectly. The strange thing is that if you conect the "faulty" device across a hub or something similar, it works perfectly. iPad also works fine with left port.

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Answer 4

Maziyar Author

Level 1

15 points

Jul 25, 2012 5:57 PM in response to Lcastillo

Wow that's interesting. The exact same situation here. I've got the same devices. And yes left USB port. And yes with sth between the way it works fine. Hub or an external keyboard with USB port. And yes my left USB port works with my iPod touch, my friend's iPhone 4, and pretty much everything.

Have you tried to install ML that released yesterday to see whether it fixes the USB glitches?

Please let me know if you find out anything.

Thanks

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Answer 5

Maziyar Author

Level 1

15 points

Jul 26, 2012 6:41 AM in response to Maziyar

Just updated to ML and my iPhone 4S works fine again without any problem.

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Answer 6

Maziyar Author

Level 1

15 points

Jul 27, 2012 10:02 AM in response to Lcastillo

OK it happens again. If you go to the Game or sth it stops! Can I ask what is you iOS version? And what happened for you case?

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Answer 7

gein

Level 1

5 points

Aug 5, 2012 10:14 AM in response to Maziyar

Just wanted to say that I have the exact same problem. Not sure whether this is software or hardware related.

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Answer 8

Maziyar Author

Level 1

15 points

Aug 5, 2012 10:24 AM in response to gein

Is it iPhone 4S or 4? iOS 6 or iOS 5? I did a couple of SMC reset. It helped for a few minutes and then it started again. I hope it's not a hardware issue and don't get worse.

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Answer 9

gein

Level 1

5 points

Aug 5, 2012 10:26 AM in response to Maziyar

It's actually Galaxy Nexus (i.e. Android). But I experience the same behaviour. It keeps disconnect/connect over and over.

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Answer 10

Maziyar Author

Level 1

15 points

Aug 5, 2012 9:21 PM in response to gein

it's weird. Have you installed Mountain Lion as a clean installation or did you just upgrade over Lion?

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Answer 11

Aug 6, 2012 1:36 AM in response to Maziyar

Hello all again!

I have made a clean ML installation and all it is the same, at first it went ok for some minutes, but after the connecting and disconnecting issue appeared again, I have reseted the NVRAM/SMC several times with any result.

I am waiting an Apple response for one week, so it would be great if you made pressure to Apple too.

So, to sum up:

Left USB with clean Mountain Lion installation in a MacBook Pro Retina doesn't work well. Iphone 4S and some usb deveces keep connecting and disconnecting. If you put these devices across a hub it works ok. I have tried other MacBook Pro's with Retina display even CTO like mine (2.3Ghz, 16GB RAM, 256 SSD) and they don't have that weird issue.

To clarify all possible situations, at first i did the update, not the clean installation with the same results. I think Apple has to take actions with people like us and clarify if it is a software or harware issue.

Thanks for your support guys!

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Answer 12

Maziyar Author

Level 1

15 points

Aug 6, 2012 1:42 AM in response to Lcastillo

It's so weird that it happens the same way for all of us. Left USB port keeps reconnecting and it gets working with hub between the way.

I hope that it's a software.

Thanks for the update man. I'm waiting to see what Apple says to you for an answer.

I will keep you guys posted with my latest update.

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Answer 13

Aug 6, 2012 1:52 AM in response to Maziyar

One question:

Which manufacturing date is your rMBP?

Mine is week 28. In order to do a DIY research about if it is a Hardware or Software issue, we could compare our manufacturing dates.

For getting the information you need your S/N and put it into that web page:

http://www.appleserialnumberinfo.com/Desktop/index.php

My information:

Model:	- MacBook Pro (Retina, Mid 2012) (CTO)
Codename:	- No codename assigned.
Build Country:	- This unit was built in China
Build Year:	- This unit was built in the second half of 2012.
Build Week	- Week 1 (January) or week 28 (July)
Production Nr.:	- This unit was number 1205 to be built that week.

I hope Apple is reading us....

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Answer 14

gein

Level 1

5 points

Aug 6, 2012 2:59 AM in response to Lcastillo

Model:	- MacBook Pro (Retina, Mid 2012) (CTO)
Codename:	- No codename assigned.
Build Country:	- This unit was built in China
Build Year:	- This unit was built in the second half of 2012.
Build Week	- Week 1 (January) or week 28 (July)
Production Nr.:	- This unit was number 1058 to be built that week.

I'm still running Lion (with latest updates)

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Answer 15

Maziyar Author

Level 1

15 points

Aug 6, 2012 4:21 AM in response to gein

Week 30. Had the issue with Lion+latest update. And still have it with Mountain Lion.

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