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Did you mean your Samsung S8000 Jet phone displaying invalid Sim card?You need to unlock it from current network lock,to use other network sim card.Visit the site Mobileunlocksolutions.com get unlock code and unlock it easily.Then use with any GSM network sim card.Check whether unlock code is available for your network and country.If it is available get it and unlock it.You can unlock only GSM network locked phone.You cannot unlock CDMA network locked phone.After unlock your phone you can use any GSM network sim card in it.You cannot use any CDMA network sim card in it.
Step 1: Check the sim tray or sim seater to see if it it broken, if it is, replace it Step 2: If the sim seater/tray is not broken, clean the entire terminal. Step 3: If the sim seater/tray is not directly on the board, trace the broken led and solder it, or you replace the broken led with another sim tray. Step 4: If it is still not working, change the battery and put a new battery, because a virus infected battery will always give such problem. Step 5: Finally, if the problem still persist, then check the sim card and replace with another sim card if the former is bad because a bad sim card will always display such message as insert sim card or sim card error.
It's not reading Only T-Mobile Sim card ?It's not reading other sim card also Expect Only One Sim card? If it reads only Sim card and not reading Other Sim card like for Example T-Mobile,AT&T,Orange etc means it locked to Network ,you have to Unlock it To use any GSM Network Sim card,What is Mobile Phone Brand and Model?Find the Network ,Country it locked now? then first please You can find it locked To GSM Network or CDMA? Network CDMA Network means You cannot Unlock t to use any gsm Network Sim,Gsm Network Lock means You can Unlock it to use other Network Sim card...You can Unlock it using the Unlock code,You can get the Unlock code and instructions at here Unlocking4u.com and Unlock it from Network Lock,then you can use with T-Mobile Network surely.
When the message sim card registration failed comes up it is usually as a result of one of 2 things the first being that the phone has not recognized the sim card due to an improper fixing or the sim card has become faulty. Simply try the sim on a different mobile device to determine if the sim card is still good. Thank you for visiting FixYa.
Hope this solution has been helpful?
There are basically 2 branches when it comes to mobile phones. Some phones have SIM cards to connect or another technology that does NOT use sim cards These non-sim phones use CDMA instead of SIMs, so you cannot just swap SIMs like on GSM.
This is GSM and is what T-Mobile and AT&T use for voice.
Sprint and Verizon use CDMA but isn't normally unlocked.
In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access(CDMA). Cellular carriers including Sprint PCS, Cingular Wireless, Verizon and T-Mobile use one or the other. Understanding the difference between GSM and CDMA will allow you to choose a carrier that uses the preferable network technology for your needs.
i think your phones is programmed for suppoting one kind of sim card chech if your handset is cdma or gsm if its is cdma it will not suport gsm sim cards but it will support all kinds of cdma sim cards and if it is gsm it will support only gsm sim card not cdma if its is progrmmable phone take to service center and check whether the phone have the capability to support both gsm and cdma
Is the TATA Indicom sim a GSM connection..?
Is that the Huawei C5330 supports GSM...?
Keep in mind that u cannot use a CDMA sim card on a GSM phone. Or a GSM sim will not work on a CDMA phone. Just go by this.