Nokia 5310 xpressmusic phone is powering down by itself

try to check this site.
problem with Nokia 5310 bluetooth camera and Nokia Support Discussions

Hi, you can get the restriction code for a Nokia 5310 XpressMusic from www.unlocking4u.com/nokia-5310-xpressmusic/rs6wp9/ at affordable cost.
Here are the steps for unlocking a Nokia 5310 Xpress Music,
1 - Switch on your Nokia 5310 XPRESSMUSIC without any sim card.
2 - Don't bother as to what is displayed on your Nokia 5310 XPRESSMUSIC.
3 - Compose #pw+CODE+1#.
4 - The Nokia 5310 XPRESSMUSIC would then display the message "SIM Restriction Off" and will be unlocked!

Hi,

Please check your power switch for defective. Its body made from small plastic mold.

Regards

Nokia 5310 XpressMusic Unlocking Instructions
1. Switch ON your Nokia 5310 XpressMusic without SIM Card,
2. Compose #PW+CODE+1#
(if locked to Fido / Rogers Canada, please compose #PW+CODE+7#)
The letter P appear after press 3 times quickly the button star ( * )
The letter W appear after press 4 times quickly the button star ( * )
The letter + appear after press 2 times quickly the button star ( * )
3. Your Nokia 5310 XpressMusic will show "SIM Restriction Off" and is unlocked!

http://www.cellphoneunlock.net/blog/2010/10/how-to-unlock-nokia-5310-xpressmusic/For Further Convenience

nokia 5310 xpressmusic auto power off solution

either it is 0000 or download a software called world unlock calculator that works .

There are several ways for unlock mobile phones, codes are best way to unlock because it has easy methods and safe also!!!
To unlock Nokia 5310 xpressmusic,
you may try this site http://www.onlinegsmunlock.com/nokia-5310-xpressmusic/rs7wp9/
It has the best instructions and methods for unlocking mobile phones!!!!

How to unlock security keyguard on nokia 5310 xpressmusic

by data cable or card reader

????????????? Nokia 5310 XpressMusic ?? ???? - ??? ????? ??????? ? ??????? ?????? ??????? ???? ???? ????????? ??????????. ?? ?? ?????? ????? ??????? ? ?? ?????? ?? ?????-???? ???????, ??????? ???? ????? ????????????? ?????? ???? ?? ?? ????????? ???? ????????. ????? ???????? ??? ????????????? ???? ??? ?????? Nokia 5310 XpressMusic, ??? ?????????? ???????????? ????? IMEI (?????????? ????? 15 ????). ??? ????? ?????, ?????? * # 06 # ? ???????? ?????? ????????, ? ????? ???????? ????????? ???????? ?? ????? ??????????.

Nokia - ?????? ????????? ??????? ????????, ??????? ??????? ???????? ????????. ? ?????????, ???, ??? ???????, ??????????? ?????. ? ??? ???? ????????? ??????? ???? ????????. ???? ?????? ????????????? ???? ??? Nokia 5310 XpressMusic.
?????? ??? ?????? ???????? ?? ????? ?????? ???? ?? ???????? ??????????? ???? ??? ???????? ??????? ???????. ??? ?? ?????? ??????? ? ?? ????????????? ?????-???? ????? ?????, ????? ??? ??????? ??? ??????? ? ?? ??????? ????????. ????? ??????? - ??????? ?????????? ???? ??? Nokia 5310 XpressMusic. ?? ???????????????? ?????? ?????????????? ???? ??? ????? ??????? ???, ? ??????? ???????? ??????????, ? ?? ???, ??????? ?? ?????? ????????????.
?? ????????, ??? ?????? ??????? ???????? ??????????? ?????????? ? ?? ????? ?????? ????, ? ? ??? ??? ??????? ????? ???. ??? ?????? ?? ????? ????? ????????? ?????????? ?????????? ??? ???????? ???? ??? ?????? Nokia 5310 XpressMusic.
Razblokirovka Nokia 5310 XpressMusic po kodu - eto samyy prostoy i bystryy sposob sdelat' vashu set' ustroystv besplatnoy. On ne meshayet vashey sisteme i ne menyayet yeye kakim-libo obrazom, poetomu dazhe posle ispol'zovaniya nashego koda vy ne poteryayete svoyu garantiyu. Chtoby poluchit' kod razblokirovki seti dlya vashego Nokia 5310 XpressMusic, vam neobkhodimo predostavit' nomer IMEI (unikal'nyy nomer 15 tsifr). Yego mozhno nayti, nabrav * # 06 # v kachestve nomera telefona, a takzhe proveriv nastroyki telefona na vashem ustroystve.

Nokia - khorosho izvestnaya finskaya kompaniya, kotoraya sozdayet otlichnyye telefony. K sozhaleniyu, oni, kak pravilo, blokiruyutsya set'yu. U nas yest' ideal'noye resheniye etoy problemy. Nasha sluzhba razblokirovki seti dlya Nokia 5310 XpressMusic.
Pochemu eto luchshiy variant? Po ochen' nizkoy tsene vy poluchite spetsial'nyye kody dlya udaleniya setevoy blokady. Oni ne menyayut sistemu i ne ustanavlivayut kakiye-libo novyye fayly, chtoby vash telefon byl zashchishchen i ne poteryal garantii. Samoye glavnoye - vybrat' pravil'nuyu set' dlya Nokia 5310 XpressMusic. Iz predostavlennogo spiska podderzhivayemoy seti vam nuzhno vybrat' tot, v kotorom prikhodit ustroystvo, a ne tot, kotoryy vy khotite ispol'zovat'.
My ponimayem, chto mnogiye kliyenty pokupayut poderzhannoye ustroystvo i ne znayut tochnoy seti, i u nikh net sposoba nayti yego. Vot pochemu na nashem sayte poyavilos' besplatnoye prilozheniye dlya proverki seti dlya vashego Nokia 5310 XpressMusic.


Here's the link for reference: http://www.fixya.com/answer/answerpagelistview.aspx?ctg=122