Data retention without power - HD2 General

how long will the hd2 retain ram while the battery is removed or completly flat?
cant seem to find any mention of it in the user guide

If you're wondering whether the phone hard resets itself when it loses power then you don't need to worry. This hasn't been a problem since Windows Mobile 5.

excellent news thanks!
must admit, i've not been involved with WM devices since, well... a long time ago!

Related

How to really power off an XDA2 /Qtek2020

Hello everybody; Sorry for this silly question, but it seems i cannot fully power off my smartphone in order to have it full charge the battery whithout the phone being on. By this i mean the smartphone totaly powered off and not only having deactivated the radio section of the phone which deals with the mobile phone section of the appliance and the bluetooth ; When i press on the power button, the only thing that happens is that the display switches off and not the smartphone; I was accustomed to a real switch off on my other smartphone P900 withj symbian UIQ 7.0
Have i missed something or is this condition a feature /bug of the phone or microsoft windows mobile 2003?
Thanking you all in advance for any input i remain
Arnaud
Hi, I'm new here. Just known XDA II for two weeks.
About ur question, I think it's not a bug but rather a feature. U can turn off the phone by click the phone icon at the top bar.
I would hate it if I can't power off the pda without the phone is on.
'cause when I sleep I really don't need the pda section. :wink:
Hi
Yes, you missed something...
A "real" power-down is similar to a hard-reset, and believe me, you won't do a hard-reset if it is not totally necessary.
The XDA unpackes the program files at powerup into its sdrams and keeps the data in the sdrams when it is switch off. Of course this sdrams need power to keep the data.
Otherwise, you can still remove the battery :wink:
But, I agree, it would be interessting to know how long the battery lastest when the phone is switch off.
regards,
actually, you CAN remove the battery
after all, the battery IS removable.... and intended to be replaced.
But then your PPC will be on the "backup battery" and 30 minutes
later you will lose all your data. too bad.
The fact is, not only you absolutely cannot turn this thing off,
if you're down to 5% power and will be awhile before you
plug it for more power,
YOU BETTER TURN IT OFF AND TURN THE PHONE OFF
if you somehoe run down the battery to zero with a phone call,
you will have a hard reset in 30 minutes ....
this is all the result of the STUPID MS DECISION, long time ago,
not to put all the critical data/install/whatever in FLASH / SD card.
this is all the result of the STUPID MS DECISION, long time ago,
not to put all the critical data/install/whatever in FLASH / SD card.
Click to expand...
Click to collapse
It wasn't a bad decision for the time - memory that kept its contents without power was very expensive, and very slow. It's still not great. Symbian went the no-power memory route, and the earlier devices (Nokia 9200 series) were crippled by it (CPU underclocked to 56MHz to cope with the memory, and too little memory to do everything people wanted).
Don't forget, you can't just use regular flash memory - it's still too slow, and will wear out with too many write cycles, however a good feature would be a 'hibernate' mode that dumps the static ram to flash ram, and restores on power up. Sort of like the *FlashMan utilities, but actually useful.

what absolute crap

i have had a few gadgets, mobiles and electronic stuff in my time, but to this day have not heard such a stupid thing as if i leave my phone untill the battery goes flat, I LOSE ALL MY DATA??!! this has alreeady happened to me after 1 nite i forgot to put the damn thing on charge, somebody should tell the makers of O2 XDA that some people have a life that does not revolve around constantly checking if your damn phone is about to wipe out all your data everyday!...also I cant seem to switch the damn thing off, by that i mean, there are times when you dont want people to call you, so you switch off your phone the normal way, by pressing the off button, was this too hard to incorporate????!!!!
...phew, feel a little better now, thanx guys.
i was worried about the Switching it off thing aswell at first.
Awnser is "Turn Wireless off" tap on the signal meter and the option is there.
also about saveing battery life, remember to allways press the power button on top when your not useing it
and to stop all sound, mute it
thing to remember is..
its a PDA with a phone built in.
not
a Phone with a PDA built in.
there is a diffrence as i say to ppl who tell me "man why d'you want a phone like a brick"
p.s. back up all data to your pc now n then
battery life never been a problem to me so far
and i can leave it days without a recharge.
anyway, it switches itself off as a failsafe if power gets too low.
obviously you need to go back to an organizer on paper. :lol:
The XDA /MDA is more a computer that a phone.. :shock:
Over 23 years of computing an ppl still think backup up is not needed.... :roll:
Hey dont knock rai. Its peeps like him that keep us IT'ers in a job :lol:
stryker said:
Hey dont knock rai. Its peeps like him that keep us IT'ers in a job :lol:
Click to expand...
Click to collapse
LOL!! :lol:
granted that the XDA is more a computer than a phone, but i dont lose all my software and my documents if my laptops battery goes flat.
im not aking to have the wheel re-invented (honest), just expect a simple "OFF" switch to "switch off" the device and to have my data and contacts still there, should i sacrilegiously forget to charge it.
rai, there is an option to write your contacts and other data to ROM, thus preventing loss of contact and appointments or all data if you have enough space.
rai said:
granted that the XDA is more a computer than a phone, but i dont lose all my software and my documents if my laptops battery goes flat.
Click to expand...
Click to collapse
Ypu would if you had i lightweight laptop w/o harddive and everything stored in memory. :roll: And that's what the PPC is...
Ok, granted, you have got a SD card, so you can store data on 'disk' if wanted. I have everything synced, on SD backup, or on the SD card.
Worstcase scenario is i may have to wait until i get home to resore all data...
Practical: Just plug it to power in your car and and home at night, and you'll probably even forget it works on a battery that could go flat :lol:
Perhaps the only solution fro PDA is this :
"Toshiba announced that it created a hard drive the size of a coin targetted for the mobile phone sector. The drive can hold as much as 3GB of information and will start shipping in 2005.
Related Link: http://story.news.yahoo.com/news?tmpl=story2&u=/ap/20031215/ap_on_hi_te/toshiba_tiny_disk"
but unfortunately we have to wait till 2005 :lol:
hi Johan, how does it work in a SE p800, does that have a HD?
It's one of the fundamental differences between Symbian and pocketPC - Symbian specifies that the devices main memory should not loose its contents when powered down fully. WinCE takes the other approach.
A few years ago, WinCE was probably the best way to do things, as non volatile RAM (or rather RAM that needed /very/ little power to maintain state) was slow and expensive - it was one of the bug bears of the 9210 that it had too little RAM, and the whole system was heavily underclocked - down to 56MHz if my memory serves me right.
Nowadays, this type of memory is a bit cheaper, and certainly more performant (remember this is not your regular flash memory we're talking about - that would be just too slow and incapable of the write cycle demands). This means that Symbian devices now have comparable performance to the WinCE, yet WinCe is still burndened with the loss of memory on power out.
One thing I'd like to see is an automatic "hibernate" feature added to the core OS. When power drops below say 1%, all open programs are closed, the remaining critical RAM contents copied off to flash storage, and the device won't wake up again until it's charged. It'd mean that device manufacturers would have to provide enough built in spare space on the flash ROM for this, but the current situation of manually backing up the critical data with the *flashman utilities is a poor substitute.
I know several people who refuse use PPC/WinCE because of the total data loss on power out, but as with so may WinCE problems, it could be fixed quite easily with a bit of thought on Microsoft's part.
Thinking about this for a moment, it would probably be relatively easy to create a third party app to do something along these lines - we can get the battery power level, we can 'unprotect' the spare ROM space, compress and dump the critical files to it along with a 'reawaken mode' flag, and we could have a little app that runs on startup and does the reverse if the flag is present, followed by an automatic soft-reset so that all drivers etc can reload cleanly. The only tricky part is making sure that there's anough space available for the main data for contacts/diary/registry/etc plus any additionally installed programs - these could be prioritised by the user if there's some that are more critical than others.
All that sounds a little complicated for rai.
He could simply copy his contacts and save it onto the extended_ROM using a basic txt document, or save it on his SIM, which is what we all should do anyway. :lol:
Or...
he could go the long way and copy the actual file for contacts and the calendar, then paste it into a secure folder in the extended_ROM, and if ever the problem does occur again, copy and paste it again.
Either way, let this be a lesson to you all: WinCE gives you all the programs Symbian users can only dream about, but there are drawbacks - you've got to be just a little bit more responsible with their devices. Like one chap here said: It's NOT a phone.
I'm sure I've seen a prog that does automated backups to the SD card. So there is an ideal, non user intervention solution.
Also when the backpack comes out you could get a nice CF Flash micro disk. That brings all the joys of your laptop with mechanical hard drive..... hhhhm mechanicaaaallll.
oh here it is, the answer to your problems. Automated backup and low battery backup
http://www.spritesoftware.com/ppc/products.html
rai the reason your laptop's batt is soo big is related to the fact that it use a harddisk because harddisks are full of moving parts which spin at a pretty fast pase
this cost batt juice
so if the xda or p800/900 had a harddisk you would not have much time to put in your data before the batt was flat
Pocket Backup Plus from Sprite Software, like stricker said , is the solution to all these problems ... use it and ....keep cool ! :wink:
Thanks for the link, didn't know about this program (as I always back up to PC anyway). OEMs should buy it and stick it preconfigured into their roms.
I've seen that backup prog recommended by others and in interest of doing as I preach I installed it. However I found an issue.... may just be affecting me tho. See the other thread I started, "spritesoftware backup package".
XDA2 backup and restore
I use sprite's backup program and backup every day to my PC. I copy this backup and of course the program to an sd card, and my webserver. That way I can be reasonably safe. Mine went flat today, but used one of those emergency chargers(takes AA batts), and was back in business in a few mins.

A techy query - Deleted files on XDA IIi

All,
Hoping to call on your expertise...
My XDA IIi recently crashed and stayed that way probably about an hour before I spotted it, soft reset didn't work so I removed the battery. Bad idea.
From what I can gather numerous programs still running in background had actually worn down the battery. Not knowing this I removed the battery to reset the device. Un be known to me at the time, the backup battery was faulty and not holding a charge and the unit affectively did a hard reset.
so now I've lost all my data on the device. I note from reading other posts this generally means your screwed and the data is gone with the underlying message to backup device regularly.
However speaking to UK firms like ontrack data recovery for a fee they claim to be able to recovery data from your device and I don't mean the areas referred to as 'storage' and 'storage card'.
How come they can do it, yet no tools exist for the consumer? It sounded from other posts that it was technically impossible, yet for £300 they seem pretty confident.
Am I missing something?
Any help appreciated... lost some pictures and video of my baby boy, born just a few days ago...
Thanks,
PPCDude
as far as i know you cant recover the data any more then you can recover the stuff in your ram on your pc if you close it without saving
sdram will loose the data if it loose power
unlike flash and hd's where even if you delete data it's still there
untill the sectors the data was on is later overwritten with new data

Hey

Hi guys i wasnt quite sure where to put this thread but finnaly decided this forum was fine. I am sorta a newbie but have been reading loads. I think this website is awesome and i will probably donate!! Anyways i have been having a problem with my phone . It is a T mobile MDA Vario Uk IPL 1.06 and SPL 1.06 and WM5, OS 5.1.70 (if that matters)it died, i went to the tmobile shop they sent it to thier place but it came back unfixed. Anyway to make a long story short i turned out to be the charger but now a week back i have got it up and running again!! But when it freezes as it does everynow and then i have no choice but to take the battery out. When i turn it back on the date and time has gone back to November 2005! It does not do this when i turn it off by holding down the power switch. It also loses some tasks i have made . But wierdly not all the tasks. For example i had 4 tasks i took the battery out , when i restarted it the date went back to 2005 and only 1 task remained!. Is there some other way to put it of that i dont know about when it is frozen? Or am i just doomed to keep changing the date!
Thnak you very much for your replies and your time in advance.
Are you trying to soft reset the phone first? Are you trying to turn the phone all the way off? Removing the battery should be a last resort approach.
Here's the deal...
You can stave off a lot of these kind of memory/freezing problems in the future by loading some kind of RAM indicator (QuickMenu has a built-in one, can manage running programs, and gives you a Windows desktop-style start menu for programs instead of the dumb folder avalanche) to let you know you have too many programs running, and you need to do a soft reset every once in a while, or at least hibernate it periodically (you can do this from QuickMenu), just to jog it clean. It would also be wise for you to load a temporary file cleaner to clear out your temp files every once in a while...you'd be shocked how much crap piles up under the OS when you're not looking.
Lastly, since you might end up really losing some important data, I'd recommend getting DotFred's PIM backup tool and loading it on an SD card in your phone, and configure it to back up your phone regularly (like once a day at 2 am, for example). As long as the phone's left on, it'll do that for you, and if your phone really craps the bed, at least you'll have your contacts, meetings, and other info safe and sound.
Also, in the future, please add the info on your phone to your sig, so you don't have to repeat yourself 8,000 times, and you might want to try more descriptive titles for your topics than "Hey," unless you like being ignored...
Thank you Myrddin Wyllt but what did you mean by hibernating it ? do you mean just pushing the on/off button quickly so the screen goes of? oh yeah and thank you for all the advice on this forum i shal procede to do that now! Thnak you again
Yep i have done that now
upgrade your OS to at least WM6.
When I got my phone it had WM5 on it, and it used to lock up or spontaneously soft reset at least once a day, even though I soft reset it regularly. Since I upgraded to WM6 I no longer have these lockup problems.
thank you i was thinking about upgrading but wasnt sure! About the battery thing i just found out about the little hole on the side. I think this solves the problem . But about upgrading will it make my phone slower or take up precious memory or something? And the big question which one?? Also some apps i would like to have require .net framework 2.0. I tried installing it on my phone on the storage card , i had about 50mb free but it still said there is not enough space and told me to clear up space and start again! will upgrading my rom also solve this problem? Is WM6 just like WM5 what are the differences i am a beit of a newbie here! You might have to treat me like a child on this one!
Also i was wondering out of the 47.4mb internal memory of the MDA Vario how much is used by the system and how much crap have i got on? Also if i use "clear storage" then will it also get rid of programs i have installed on my memory card and i have unlocked my phone. Will it re-lock it and return the old crappy t-mobile themes?? (i have spb moble shell atm)
Thank you in advance!

Need help for my O2 atom with camera and battery problem

I have an O2 atom with windows 6.1 by PDAVIET with these problems:
1) Its camera hangs when i start it either from application or button, No preview, but control buttons are there (same problem existed with original windows 5.0 rom).
2) Battery remains always full when on AC power , when seen from start>settings>system>power. But, after removing AC source, it comes at 0%immediately (and still the phone works for fairly long time but cant tell when i need to recharge it as it shuts down without any low battery warning).
Looking for any solution to save this device...or let me scrap this device until I manage to save enough money besides paying for my medical education fees to buy any other new one. Thanks to all of you here for help.

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