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Old June 7th, 2013, 01:02 PM   #1 (permalink)
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Default New S4 not charging on car apdator when using GPS

So I noticed that when I have my S4 plugged into the car adptor I see the lighting bolt and it will charge.

But If I use My Waze GPS app, it actually drains the battery instead of still charging. Still has the lighting bolt, but I actully see it drop from 56% to 55 to 54, etc...

Now my old Razr would charge will using the gps.

Any idea what's up with the S4. I hope this can be fixed.

Thanks

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Old June 7th, 2013, 01:05 PM   #2 (permalink)
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Originally Posted by rdefino View Post
So I noticed that when I have my S4 plugged into the car adptor I see the lighting bolt and it will charge.

But If I use My Waze GPS app, it actually drains the battery instead of still charging. Still has the lighting bolt, but I actully see it drop from 56% to 55 to 54, etc...

Now my old Razr would charge will using the gps.

Any idea what's up with the S4. I hope this can be fixed.

Thanks
Sounds like the charger is not supplying enough power to the Phone. what amp is the charger?
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Old June 7th, 2013, 01:20 PM   #3 (permalink)
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Iy doesn't say. It is a vervizon charger.

But they gave me a new when I bought the S4. it's a 5v /1A.

Would that be enough do you think?
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Old June 7th, 2013, 01:49 PM   #4 (permalink)
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My bet is that the phone, in navigation mode, uses more power than the adapter can supply.
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Old June 7th, 2013, 01:53 PM   #5 (permalink)
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Maybe try one of these? Amazon.com: AnkerŪ 18W / 3.6A Car Charger with Built-in Micro USB Cord for Android - The First and Smallest Adapter to Deliver Simultaneous, Full-Speed Charges to iPads and Smartphones: Cell Phones & Accessories
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Old June 7th, 2013, 01:53 PM   #6 (permalink)
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Is there a charger that I can use that can charge it in navigation mode.

If not, then this phone is useless to me. I drive over an hour at times and using gps drains this thing.
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Old June 7th, 2013, 02:01 PM   #7 (permalink)
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It's not an S4 thing - I get the same with both S4 and my Note II. It uses more than the charger can provide. I even tried a 2.1amp charger with not better results. I am thinking that maybe my 2.1amp charger is faulty, though. I need to try it again. However - if it's a 500ma-1a charger then I bet it's not supplying enough.

I was also thinking of perhaps using an inverter and charging it via the AC adaptor.. lol anyway, yeah - that is one of the reasons I stopped using Waze for now.
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Old June 7th, 2013, 02:08 PM   #8 (permalink)
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I use the GPS 100% of the time on my SIII when I drive and although it charges slower than with the gps off but it still charges. I'm using a 1 A charger.

Losing charge while charging and using GPS would be a deal killer for sure.
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Old June 7th, 2013, 02:10 PM   #9 (permalink)
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Ya, this is a Samsung issue. I mean not having your phone at least hold the charge while using gps on the adapter is crazy.

I might be returning the phone!!!
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Old June 7th, 2013, 03:03 PM   #10 (permalink)
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Panic is over. I tried the new charger that I got with the s4 and that charges the phone while using wazes.
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Old June 7th, 2013, 03:19 PM   #11 (permalink)
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The same thing used to happen to my S2. As you have found out, you need a pretty beefy charger to have GPS and the screen on all the time and not still lose charge.
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Old June 7th, 2013, 03:29 PM   #12 (permalink)
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Quote:
Originally Posted by rdefino View Post
Ya, this is a Samsung issue. I mean not having your phone at least hold the charge while using gps on the adapter is crazy.

I might be returning the phone!!!
It's not a Samsung issue. Its a powerful phone issue. My friend with the new HTC phone has the same issue using a generic ATT charger. The solution is very simple. Get a charger with at least 3A....
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Old June 7th, 2013, 03:44 PM   #13 (permalink)
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Most devices now have low and high charge rates. For instance, the phone can pull more amperage than your PC USB port can provide. So, it will use a safer charging profile. However, when using an OEM (or properly designed third party charger), there's a small amount of resistance across two pins that tell the phone it's safe to charger at a much higher rate. It wont matter how much amperage your charger has if it doesn't tell the phone (or the cable doesn't provide) the spec needed to change to high charge rate. At <500mAh, it's just not enough to charge and navigate (screen on, scrolling, routing, data for maps and GPS).
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Old June 7th, 2013, 08:55 PM   #14 (permalink)
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Oh, and don't forget, if you're phone gets too hot, it will slow down charging or just stop altogether. This can easily happen if you're phone is mounted on the windshield and the sun is hitting it.
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