Database Users

Phone Life With None stop WIFI Tethering.

So I have a question about a debate me and one of my room mates have been having.
If I took a G1 completely clean with just wireless tether running on it.
The phone is permanently on a wall charger tethering as the main internet connection, will the battery eat **** with in 2 weeks cause of constant charging and heating up, or would this setup last for a long while like a router.
Now keep in mind this phone will never be unplugged from the wall charger and its sole purpose is to provide wireless tethering.
Thanks.

I don't imagine the battery would completely die in a couple weeks, but there's no way in the world I'd do that. You can almost hear my phone breathe a sigh of relief when I turn off tethering.

sxfx said:
So I have a question about a debate me and one of my room mates have been having.
If I took a G1 completely clean with just wireless tether running on it.
The phone is permanently on a wall charger tethering as the main internet connection, will the battery eat **** with in 2 weeks cause of constant charging and heating up, or would this setup last for a long while like a router.
Now keep in mind this phone will never be unplugged from the wall charger and its sole purpose is to provide wireless tethering.
Thanks.
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I'm sure that you can tell that the temperature of the device increases drastically when you are using wireless tethering.
Electronics DO NOT LIKE HEAT!!!!
Every 10 degree increase in temperature will decrease the life of the device by approximately 50%.
If your sole purpose of the device is tethering, I suggest that you pick up a cheap USB stick instead and put your simcard in there.

I've actually been using my device tethered as my primary internet access at home for a few months now. If the fact that my G1's original battery was a year and a half old didn't mean it was about to bite the dust (daily discharge cycling), then the temperature of tethering sure did. Before I replaced it (oh I mentioned that it swelled up right?), I was getting about 2 hours max with backlight on.
If you do want to tether, use some form of USB tether. Temperatures will be significantly lower than with a WiFi or BT tether. Also, make sure your signal strength is as high as you can get it. The lower your signal strength, the more your phone needs to amplify the incoming and outgoing signals. This understandably also creates higher heat generation.

umm, if its constantly plugged in why not just remove the battery, run on plug power, less heat

Evil Eris Lightening: Wireless Tether Power Drain

I flashed the Evil Eris Lightening ROM to my Eris a couple of weeks ago and have noticed a few hiccups, but the most notable has been the Wireless Tethering app that comes with the ROM. Even when it is plugged into AC, the battery power continues to drain slowly. This seems to be a flaw in either the hardware or the software, because at the very least the phone should continue to hold a constant level of charge, not drain. In fact, since the phone is plugged into the AC charger it should continue to charge the battery.

piccolo75 said:
I flashed the Evil Eris Lightening ROM to my Eris a couple of weeks ago and have noticed a few hiccups, but the most notable has been the Wireless Tethering app that comes with the ROM. Even when it is plugged into AC, the battery power continues to drain slowly. This seems to be a flaw in either the hardware or the software, because at the very least the phone should continue to hold a constant level of charge, not drain. In fact, since the phone is plugged into the AC charger it should continue to charge the battery.
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Well to start off there isn't a evil eris lightning rom that I know of...there is the evil eris rom or the eris lightning rom...but either way wireless tether sucks alot of juice out of the phone. The charger has never kept up with the battery drain on any rom for me with wireless tether. The phones were not made for wireless tether which i why you need root to run it. I don't believe you are experiencing anything out of the ordinary though as it is the same for me on any rom.

seconded. I dont think the charger can keep up with the drain of Wireless tether, but I could be wrong...

I've actually had a thing pop up while it was charging that the charging current wasn't sufficient please switch to a/c lol it was plugged into my wall
Sent from my Eris using XDA App

Simple, that app draws more power than the charger can supply. You don't dare use this w/o being plugged in, that's for sure !! I do suspect that the amount of "traffic" it moves is a factor though, so you must be using a lot. I use it in the car, plugged in, and my son or wife has their iPod touch use the wireless. Even Pandora streaming hasn't drained my battery or maybe we didn't run it long enough...

Spencer_Moore said:
seconded. I dont think the charger can keep up with the drain of Wireless tether, but I could be wrong...
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Back when the (stock) Eris was still on 1.5, a few people over on Androidforums pointed out that you could discharge the Eris with very heavy use while it was plugged into a real USB hub (rather than the AC adapter). Typically this would happen when streaming a feed from the mobile network and also manipulating the display (games, web browsing, et cetera)
That was with a stock phone where the WiFi radio and Cellular radio are only incidentally used at the same time.
USB 2.0 devices are limited to 500 mA @ 5V, so that result means that the phone was dissipating something north of 2.5 Watts for this to happen. That observation is entirely believable, as the RF PA (Power Amp) in the Eris can burn 2 Watts by itself in weak signal areas.
OTOH, with wireless tethering, both radios are going full bore when there is traffic present. Presumably the CPU is also chugging away with overhead as well.
It may well be that the programmed charging rate of the battery limits how much current can be jammed into it (to preserve battery life), so that even using the A/C adapter (1.0 A @ 5V) rather than USB doesn't change how fast the battery charges when the battery temps are elevated because of heavy use.
I believe it - sort of doubtful that the phone was thermally designed for that much continuous power dissipation.
I was going to say "there's always the option of running a Linux box with a Wireless AP stack, and then using wired tethering as the Linux box' WAN connection" - but then you are back down to the 2.5W limit.
It might just be that you "can't get there from here" with the Eris - unless the usage is something like reading stuff off the internet - short periods of high traffic interspersed with practically no activity at all.
bftb0

bftb0 said:
...sort of doubtful that the phone was thermally designed for that much continuous power dissipation.
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That's another factor when tethering... The phone gets HOT ! I let someone tether their laptop off of my phone for 2-3 hours (casual internet use) and the phone got up to 47' C. Never went higher though.

Does anyone know why wired tether doesn't seem to work with any ROM? I used it on my wife's myTouch 3g and it seems to be able to keep up with charging her phone when plugged into the laptop.
Is pdaNet the best way to do this or is the wired tether app better? I haven't been able to try pdaNet yet.

The wired tether worked for a bit with CyanogenTazzv3.
Speeds were as good with the wifi tether, but it seemed less stable.
Phone would randomly reboot while using it some times.
As for the battery drain with the wifi tether...
I noticed after configuring the setcpu screen off profile (245/245), as long as i left the screen off while tethering and using the wall charger, it was able to keep up with the power drain and actually charge the phone.
This was also on CyanogenTazzv3/4 however..

The battery drain isn't unique to the Eris using wifi tether. It's the app and all the traffic going through the phone.
I've tested this on my Eris, and friend's incredible, evo, my touch and, G1.
Its just a power hungry app.
Sent from my Eris using XDA App

Using PDANET and my phone dies anyway??

Hey all, i have an odd one that i wanted some opinions on. I've been working a convention for the weekend and have been using my desktop PC for audio work. Since the desktop doesn't have a wifi card, i connected my evo to the hotels wifi and then connected it to the desktop via PDANET. i've been running it all day, about 11 hours now and even though the phone reports 98 percent, it just clicked off. No warning, no low battery, just off. When i plugged it back in via wall adapter the battery reads 3%.
My assumption is that running WIFI drained more juice then the USB power could supply and this killed the phone. My question is, how come the phone reported a full battery and subsequently neglected to display any low battery warnings?

I tether using usb with pdanet 4 days a week anywhere from 6 to 12 hours. Never had that problem. Might be a setting to not charge while tethering.

than its ur phone pdanet does not kill battery

Batter getting worse if connect to usb all the time?

Hi, I use MyPhoneExplorer to write sms from my laptop (tried EasySMS and RemoteSMS and didnt like them) while using the cable-mode. JuiceDefender somehow always turns off the WiFi eventough i add the MPE-Client to the allowed apps. However, since my Desire HD would be connect via USB to my laptop all the time, is it bad for the battery?
I know that on laptops you should remove the battery if its connected to the AC all the time.
Thanks

IMHO any kind of battery will degrade with time if constantly connected to a power source. So if you connect your phone via USB you better keep an eye on your battery..

No. Your battery will not get worse. It is true that a battery will lose its capacity faster if its always at 100%, but we are talking about a mobile phone. It will not be connected 24/7 for many weeks at the time so thats nothing to worry about.
Sent from my HTC Desire HD using XDA Premium App

zakazak said:
I know that on laptops you should remove the battery if its connected to the AC all the time.
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This is a myth. Might have been true in 1995 maybe but not with today's Li-Ion or Li-Polymer batteries. Just don't worry about battery, there is nothing you can do to make it better or last longer. Charge whenever you want to and be happy using your device It is the same as with memory optimizers and task killers - people are used to them from other times and other platforms and think they do good. Just don't let it discharge too much too often, they say that the best for batteries is to charge them when they're not below 40% of capacity (but even so, I don't think it matters much).
regards,
D.

I agree with dalanik, Li-Ion battery perform better if you charge it often. Actually it is bad if you keep discharging them all they way to 0 and then recharge them all the way up to 100%. It might be good in the old days where there were NiCd.
Sometimes the battery stat could be the answer. The problem with Li-Ion battery is if you overcharge them then they can explode so there is like a stat that tells how much you can charge upto, so if your battery stat is screwed up then your phone thinks it is at 100% but it might not be. Try this and this might improve your battery by retuning the stats (from HTC themselves)
The following steps should significantly extend the battery life on your phone. Please connect the phone to the charger with the phone powered on, and allow the phone to charge until the notification LED is green, indicating the device is fully charged. Disconnect the phone from the charger, and power it off. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green. Disconnect the phone from the charger and power it on. Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green. Disconnect the phone, power it on, and use it. You need to use this sequence only once. If the issue of battery life on our phone persists, I recommend you contact our HTC accessory department directly.
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[Q] will keeping charger plugged in 24/7 ruin the battery?

Sorry if this should be in the general forum but there are different opinions for different phones so I thought it's better to ask here. I don't use my tattoo nowadays but I'm getting a new contract today and my old will run for 2 more months and I thought I'd use the sim-card for my old contract in my tattoo only for wifi hotspot usage and keep it on 24/7, like a router. Will that ruin the battery? I know it can't run on charger only but I don't want to destroy the battery cause the tattoo is a good backup phone. How does it actually work when the battery is 100%, does the charging stop?

Yes
I used to have my Tattoo plugged in most of the time. Within one year my battery got swollen up and was able to give only 2 hours backup on standby. Although this was my experience, maybe the battery was defective in the first place. I suggest that you take out te battery plug in the charger and switch on the phone. If it does switch on, then you may usr it this way. I have also noticed that te phone goes very hot while in tethering mode.

lanny25 said:
I used to have my Tattoo plugged in most of the time. Within one year my battery got swollen up and was able to give only 2 hours backup on standby. Although this was my experience, maybe the battery was defective in the first place. I suggest that you take out te battery plug in the charger and switch on the phone. If it does switch on, then you may usr it this way. I have also noticed that te phone goes very hot while in tethering mode.
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thanks for the reply! I know, it get's almost so hot that it burns when using wifi tethering, that's also an issue with keeping it plugged in all the time cause high temperatures is bad for the battery. Booting it without battery doesn't work. Can't understand why this isn't standard with all phones, a lot of people use wifi tethering and it eats battery fast and you have to keep the phone plugged in the whole day. I have unlimited data and it's fast enough so I don't need any other internet at home so I use wifi tethering daily.

Alternate option
If you are not considering the cost factor, you can buy a 3g Dongle and a Wifi router that supports it. If that looks costly to you you can go ahead using your phone and then replacing the battery when it goes bad, if ever. A new battery costs about $12 here in India.

How about making charge braker, a circuit that would stop charging and start it again every lets say 12 hours

Yea, a kinda timer. We have such things in Denmark.

Sounds Cool
It sounds like a cool geeky idea. Never thought about such a thing. Does anyone have a DIY tutorial on how to go about it?

Why don't you just plug you're phone on a programmable socket?
You just have to configure the socket to restart every 8-10 hours...giving your battery the time to normaly drain and restart charging.