I use a nokia n85.bought it brand new.i couldn't install 3rd party applications on it so i hacked d phone using 'hellox' i downloaded from dotsis.i got my phone's 'certificate' from a chinese website and signed both with 'signsis' i downloaded 4rm nairaland.everything started working perfectly.i could now install 3rd party apps easily but hereon starts my problem.2dys later,my phone started rejecting my sim,saying: 'sim registration failed'.i removed d sim nd put it back nd it worked.after a few secs,it'll say same again.i tried other sims:glo,zain,etisalat,all with d same results.i put my sims in anoda phone nd it worked perfectly.i tried hard-resetting my phone (* + 3+ send) and it still yielded d same results.however,when i operate d phone without any sim in it,it works perfectly in offline mode.interestingly,when i operate d phone without d back cover and with d sim inserted,it works well for about 2dys and then d insert sim comes again.what do i do guys?is there any option apart 4rm flashing?

Happened 2 me once,i think its viral attack.

Hmmm

Really?but if it were a viral attack,shouldn't d hard-reset solve it?how did u solve urs?

Did u format the memory card alongside?if u did'nt,then u shud format it too but u could back up ur memory card b4 format so as not to loose important data.
Hope it works.

Never heard of such issue, especially on d nokia n85 of a fone! . .wat exactly is the ish, can some1 come out wit an answer?

I already formatted d memory card a long time ago.no positive results yielded.i've upgraded d firmware and software.still no results.is flashing d phone a risk?cos it seems that's my only option,

not an issue of formating nor flashing, just a simple stuff, just give me a call or mail, i will help you
08037244999
gsmxpert@expertcommunications.org

Pls nairalanders,still waiting 4ur help.
@gsmxpert, i thought u said u'll call me back 2tell me what 2do?i even called u back but u're not picking.pls call me when u're less busy or flash so i'll call u back if u have a solution 4me.thanks