Question about Sony Ericsson TM506 Cell Phone

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Last night my phone started acting up. the display said invalid sim card. so i took out the battery and sim card, and it completely died on me. this morning i turned it on and my display won't work. i can call out on it but no-one can hear me and i can't hear them. now when i turn it on i can see the sony ericsson logo but then it just shuts off. also it flashes a little when i flip it open but it won't stay on. is there any way i can fix this myself?

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It may be due to network lock, contact service provider , else you can get unlock codes here http://www.onlinegsmunlock.com/
you need to specify the phone model and network provider

Posted on Nov 29, 2010

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Posted on Jan 02, 2017

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1 Answer

Invalid sim


What is phone brand and model?If the phone displays invalid sim card in screen it is locked to network,you need to unlock it.After unlock it you can use with any GSM network sim card in the phone.Without unlocking if you use other network sim card in the phone it will display invalid sim on screen.To get unlock code for GSM network locked phones visit the site Theunlockspot.com for iphones you can get remote unlocking service in the same site itself and unlock easily.

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I took my sim card out last night. and since last night it has said insert sim card at the top of my screen can u help me?


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Try this : Remove the sim card, start the phone. Wait about 2-3 minutes then turn it off or remove the batt. and insert the sim card and start the phone again. It should start normally. This is not a certain solution.

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Did you dry the phone completely? If not here is the procedure to take out all moisture trapped in the phone: Dry the phone, battery, any accessory, sim card, etc. with cloth and wrap each piece, phone and accessories, in newspaper. Place a few handfuls of rice into a plastic bag and then place the wrapped phone in the bag with rice. The newspaper wrapping avoids direct contact of rice with your phone because the dust from the rice can get into the small areas of the phone. The newspaper and rice will absorb moisture. Leave it there (with the bag open) at least 24 hrs.

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