I have had this since 2011 for iphone 3 and now 4s, and all of a sudden it won't charge my phone or sync the time.
322340
We have never had a problem with this. Maybe try to unplug and re start? We only use it on our iPhone 4 and it seems to work well. Sorry.
242986
Both my wife and mine iPhone 4s don't work in the model I purchased last December. I can get it to briefly charge only if I physically hold it in place. Otherwise it will disconnect. With me holding it in place it still does not play my music. This is the iPhone 4 without a case or bumper. I have no idea how you get it to work.
694023
Sorry I have only used iPhone 4S on it. That works fine. It does charge it, when plugged on.
92155
I have had a similar issue with a different type of portable charger and it turned out to be the cable. I was using a non-apple certified cable. When I used the certified cable it worked just fine.
1357994
I just talked to Radio Shack about this and they don't carry it anymore because it doesn't have enough power to charge the 5s battery! I had to buy a new car charger.
1576396
This worked with my 5s for months but suddenly stopped working, I get a message saying the cable is not compatible.
1604569
Try a different iPhone cord. Also make sure the charger is on (press the power button) while your phone is plugged in. It could also be a problem with the phone itself.
2200291
It works on my iPhone 3GS iOS4 but when it times out after not using it for a few minutes it is very difficult to reconnect. Am I missing a trick to reconnecting?
1604567
Are you using the Apple supplied lightning cable? I had that issue charging a iphone 6 with a third party cable.
646596
Hey Joel. It's my understanding, the problem is the new 'lightning' connection. If your iPhone 4s has the old, what is it, 30 pin connection, you will be fine.---------------------------From googl-ing iPhone 4s and 30 pin .http://www.pcmag.com/slideshow_viewer/0,3253,l=289252&a;=289166&po;=22,00.aspAnd noticed several articles 30 pin connection replacements.So Joel, it appears you would be fine. Joe
1743818
Technical support said me that it only works with iOS and only with previous versions.
1193093
It doesn't seem to work as well post iOS7 update. Very hit or miss if it will actually charge your phone.
1264755
I ordered this for my iPhone 5s and it doesn't work with either the lightning cord that came with my phone or with extra "lightning to USB" cables that I bought from Amazon. I understand that the cord that came with it is for charging and recharging it, but once it's charged, there is no way to plug in my iPhone. The "input" opening is the wrong size. I don't know what kind of cable it is supposed to take. I am returning it. starquilt43
2241968
I had the same experience - bought the amazon certified cable, clipped off the old and have been happily charging. It's an Apple thing that change with an iOS update.
1592315
I had a 2010 Jaguar XF and my iPhone 4 worked and charged perfectly. When I got my iPhone 5 I just bought the little adapter from Apple and that worked out great. I'm pretty sure both cars are the same system.
533811
I have tried to use this to charge both an iPad2 and my iPhone 4s. It has not worked. The indicator on the iPhone shows that it should be charging, but after several hours I have not seen any charge on the phone. The iPad never showed that it was charging.
2179626
The one I had was for the 4S. Its been a long time since I used it so I don't know if they have updated it. Sorry.