Question about Dual Electronics N99i Cellular Phone

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N991 nokia saying no service

I insert my t-mobile sim card on my nokia n99i but it's saying no service. how can i make it work. need help please

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  • qh10 May 14, 2009

    My phone was working fine with the Globe sim card from the Philippines but once i left the country and it says no sevice, i even changed the networks in the network setting and it's still giving me the same message.

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  • Dual Master
  • 1,734 Answers

There is a downloadable user manual at http://chinamanuals.com
which includes gprs and mms settings for all major providers.

Posted on Mar 22, 2009

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Posted on Jan 02, 2017

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Hello my nokia 5230 has a problemes when i put in the sim card i get sim card not valid could you help me please


Hi I'm a mobile phone Tech.

If your mobile phone is on a contract with a service provider, most of the times it will be locked in with them for the duration of the contract,
So if you try to insert a sim card from a different service provider, it may say "sim card not valid'
Try to insert your original sim card and see if that works.

Otherwise if this IS your original sim card and all of a sudden this message "sim card not valid" has appeared, then the sim card has gone faulty and you need to get a new sim card from your service provider eg... Vodafone.

Hope this is helpful
MobileJB

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all you have to do is clean out the phone insert the sim in correct way, if this does not work then get a new sim or excahnge the phone for a new one

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Says insert sim


Before you do anything with it, please clean the sim card and sim card connector on the handset. Even a small rust/dust can create this problem.

If it doesn't help, you need to check the Sim card on another Handset. In most cases, this is damaged sim connector, and will be necessary to replace or re-soldered/refreshed. Sometimes even sim IC is the culprit which you need to replace or play jumper tricks. I would suggest you to get it done from a service center or from a nokia mobile repairing center.

Good luck.

Thanks for using FixYa.

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My Nokia N72 is working only in offline mode. I therefore cannot make or receive calls. When I try to switch to general mode, it says I must insert a sim card whereas the sim card is inserted. Will you...


This problem is called the 'insert sim' problem, there are several possibilities but first of all clean the sim card and the sim card interface on your phone. Next try it with another sim card. If this doesn't solve the problem, you need to go to the mobile repairing shop to get it serviced, or if you have idea in repairing mobile you can refer to this site on how to do jumper tips and tricks for this problem..http://sephonetechnology.blogspot.com/2009/08/nokia-n70-sim-ic-jumper.html Good luck.. and please...-:)

May 04, 2010 | Nokia N72 Cellular Phone

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Please insert Ur Sim Card


Clean your sim card with a dry cloth and your phone interiors with a blower/dryer. There might be some moisture. If it doesn't work, your sim is corrupt. Get a duplicate sim from Your sim card supplier i.e. your operator service.

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No network for my THL a5000 phone in America


Check http://chinamanuals.com - they have the downloadable user manual with internet network settings for all US + Canadian providers. Search on their site for "n99i".

Mar 22, 2009 | Dual Electronics N99i Cellular Phone

1 Answer

Have a virus, and how do i format my N991


go to menu, file manager then chose card or phone memory then select format

Jan 29, 2009 | Dual Electronics N99i Cellular Phone

1 Answer

Unlock n99i tv mobile


There is a downloadable N99i user manual at http://chinamanuals.com
Ask them, they know everything about these phones

Jan 26, 2009 | Dual Electronics N99i Cellular Phone

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N99i says no service


maybe you have to reset IME using flash tools and data cable

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you want to change the sim card tray in your mobile! this sim card connector is fault in your mobile.

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