You may be one of the fans of Japanese manufacturer’s output products with SONY brand. And maybe you currently have a SONY with NTT DOCOMO branded smartphone and because of an unexpected cause you have to do a Factory Reset and end up with your smartphone not being able to receive signals from providers in your country outside Japan.
You need to know that currently the smartphone marked Docomo is a smartphone with a network function that is locked so that it can only be used in Japan. For those of you who are traveling abroad or happen to have a Docomo smartphone, especially a SONY brand, if suddenly the signal disappears is to do an unlock network or unlock SIM. Anyway, unlocking the SIM is a legal method and does not violate the rule of law because on the official website of NTT Docomo itself it is permissible and there are also procedures for a number of costs.
NTT Docomo Sony Xperia Smartphone
The unlock process is done by entering a 16 digit PIN code obtained from Docomo. For a new smartphone or if you buy it in a new condition, there will be no problem, but if you buy it in a used condition, you should first check whether your smartphone can still be unlocked or not, because it turns out that for Docomo’s own smartphone currently has the limit on the number of factory resets and also the number of unlock sims. And to check this, you can choose the Service Info -> SIM Lock menu (by pressing * # * # 7378423 # * # * on your dial pad first).
Sony and NTT Docomo Sim Unlock Counter Detail
After that pay attention to the Network section at the top, if the value is greater than 0 then you may be relieved because it means that your smartphone is still able to need SIM or network unlock. Meanwhile, if the value is equal to 0, it is unlikely that your smartphone can be unlocked by a SIM.
Please note that the 16 digit PIN used to unlock is a code that is directly obtained by NTT DoCoMo. If you want to get the 16 digit PIN then you have to pay a Fee according to the type, brand, and model you have. Because of this, the unlock process is a valid procedure because it is really permitted.
But maybe some of you have felt quite bothered to get it, especially when you are busy. But take it easy, now there are many services ready to help you to get a 16 digit code to unlock your NTT Docomo smartphone sim card. You can use this method by using the services of a third party. As for if you want to do it yourself, you can learn the procedure through the NTT Docomo’s official website here : NTT Docomo SIM Unlock Guide
Hopefully this article can help those of you who experience problems with no signal when upgrading your Docomo smartphone OS and make it easier for you when you want to unlock your SIM so that your Docomo smartphone can be used outside of Japan.
