A Note on Charging Issues with The i727 and possible i727r Skyrocket

Blairware

Senior Member
Nov 12, 2009
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Wake Forest, NC
For folks that are experiencing various charging issues, especially slow charging, and or inability to go to deep sleep after charging, I want to point out something that folks may be doing without realizing the pitfalls of doing so.

DO NOT CHARGE YOUR SKYROCKET WITH A DIFFERENT CHARGER THAN IT CAME WITH
.

Here's why: The Skyrocket actually come with a 5v 1.0 Amp Charger. This is a higher output than similar phones, even the regular Galaxy SII from AT&T uses a significantly lower output charger. The best reason I can see for this is the large stock (1850mAh) battery in the Skyrocket, put there to help overcome the demands of LTE, which is a bit of a beast as far as power consumption.

This charger appears to be the same one Samsung ships with the Note, a device with a huge battery, though I have only been able confirm this by a visual. But this shows what Samsung's intent was. And a properly working charger should completely charge the Skyrocket in a couple of hours if turned off, 3-4 if running. Any longer and something is not right.

That's okay, since it is power "well spent" in my opinion, assuming you are actually in an LTE area. Those that are not though, I would have considered carefully the price you pay (in battery life) for no appreciable return, unless you are in a "coming soon" area, which is actually true for many Skyrocket owners. Alternately you can root, and use appropriate tools to drop back to HSPA+ or (shudder!) Edge.

The 1850mAh stock battery is decent, removable/replaceable unlike the new trend of sealed battery compartments, and it's possible to cram a Galaxy Nexus Battery in there (barely, and some have been unable to).

For problems with deep sleep, there is plenty of anecdotal evidence that unplugging while the screen is ON makes some difference, though in my testing (with a single example; my own phone) I could not reproduce this.
 

Bronk93

Senior Member
Oct 31, 2009
791
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Central, FL
I use an iGO 5.0v 850mA USB wall charger and I also use the GNex extended battery. After charging all night I unplugged charger and let it sit for 19 min with screen off. Of that 19 min, according to CPU Spy, it spent the entire time at 384mhz and not 1 sec in deep sleep.

I rebooted the phone and ran the same test, this time it spent 97% of the time in deep sleep and the rest at 384mhz. Pretty conclusive if you ask me.
 

yamahakid

Senior Member
Jan 30, 2008
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i used to notice this issue, but on the most recent CM9 nightlies (from about 7/2 on) the issue has went away. this is with both the charger that came with the phone, as well as the one that came with my captivate, which i have a usb extension hooked between the charger and the usb cable.
 

UZ7

Senior Member
Apr 25, 2012
1,064
328
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Florida
i used to notice this issue, but on the most recent CM9 nightlies (from about 7/2 on) the issue has went away. this is with both the charger that came with the phone, as well as the one that came with my captivate, which i have a usb extension hooked between the charger and the usb cable.
I think usb extension messed up my cord, not sure yet have to confirm it but I have no idea why just recently the cord has been transferring at 1mb/s~ to my SDCard. Not my SD card because I put it on my USB adapter and it was going 10-15mb/s :eek: I'll test with the s3's cord lol