My phone was working properly before i switch off. I am trying to change the simcard. I switch it off, i cannot on again.... when i push power buton, white screen appears one time only. When i release my batt, white screen appears again ... but not switch on...How to flash software in sony erricson k750i
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If you removed the sim card while the phone was powered on, it's possible that the card was damaged or the data was corrupted. You can try putting the sim card in an adapter and checking it with your computer. You may have to format the card again, then reinstall it in your phone, then power on your phone again.
Hi, Try removing the Simcard and reloading it again.Try switching the Simcards[Simcard 1 into Simcard 2 slot and vice versa] i.e to establish if its the Simcard or the phone with a problem.Also,check the Simcard reaction on another phone.If its the Simcard,contact your service provider for further instructions on re-activation.
Hi, Is there a lock switch on card? If so switch OFF to unlock. Also try removing batteries for 30minutes. Then try again. Be aware that most memory numbers could be erased. You may have to reprogram the numbers in again. Good luck.
i had a lg u890 mobile phone that i got unlocked but it had the same proble where i swithched on my phone it used to ask for the usim code..my old phone was locked to the 3 nt/wrk i got it unlocked so i could use my 3 nt/wrk sim card or any network simcard but i used vodafone 3g sim card.the code i used with my vodafone 3g network simcard in phone when switched phone on & it asked for usim sim code i inserted code i got & it shut the phone down then on again then it wld work with vodafone no bother at all it even came up with vodafone uk etc.but i had to reconfigure the sms/text telephone number aswell as reconfigure the mms settings & numbers etc aswell as reconfigure wap settings from 3g network to vodaphones.but after i got it all unlocked & settings changed etc & inserted a different 3g network simcard ie vodaphone/orange/o2/3g sim/t-mobile/tesco sim/virgin sims & switched phone on it asked for usim code i tryed the code i have & inserted the same code i have it/they switched phone off & then back on & all network usim card worked with no problems at all.the code i have is.>>> 142358#*# thats 142358# * # all 1 item/action.once you insert that 142358#*# thats it your phone will shut down then restart up & go onto the network usim card you want to use or inserted before using code.but 1 thing tho please remember if u switch off your phone or your phone switches off as batterys run out no power u will need to insert the code again.& another thing code wont work if your phone switches off or you switch it off & plug your mobile battery charger into phone to charge your battery up on the phone & you switch you phone back on when you are charging your phone as the phone will switch on & say insert usim code if you enter the code the phone will switch off & back on again but it will still request usim code.so you will have to wait unto there is plenty of charge in the battery to take phone off charge & swithch your phone on get the usim code message insert code above phone will switch off & straight back on again & then it will go onto your prefured usim card then you can plug your charger into phone again to charge phone up.you can use your phone on charger when u have entered usim code & it switched off & on again & registered with the prefered network.i hope this is of use to you as it is to me.if you try this code & either if it works or not please can you let me knows ty.email [email protected]
first remove the sim card and then switch on the phone... then choose antenna on... after a few seconds you will see emergancy only on your screen ... turn off your mobile and insert the sim and switch it on again ... this solved my problem ... but this is not working on my cell now..
does anybody have a solution?
hi the only one thing you can try without replacing the sim card reader is do you know when you put the simcard in if you push on the simcard with your finger so your pushing it down onto the contacts is fold up some paper so that it put pressure onto the simcard when you put the battery on as alot of times the contacts dont touch the sim card properly so putting some folded paper on top of sim card pushes it down onto the contacts properly. This solves the problem in most cases but it can be difficult to get right as if the paper isnt thick enough then it might not push it down hard enough to make contact. If after doing this it still dont work then this either means the sim cards no good but you could try it in another phone or it could be that the sim card reader is not connecting with the board properly and would need replacing. Make sure you check the contacts are clean on the sim card and the sim card reader to make sure this isnt problem. If you have not tried the sim card in a different phone then it could be the sim card is no good. Did this sim work in the phone before just in case the phone dont accept that network as you can get this message if this is the case.
Let me know how you get on and if you need further assistance ok