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Discussion in 'Android Devices' started by alphonce, Nov 20, 2020.

  1. alphonce

    alphonce Lurker
    Thread Starter

    my device has developed network disconnect for both sim cards what can i do to recover network connection, I have tried factory setting but its not of help.

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  2. mikedt

    mikedt 你好

    Possibly IMEI blacklisted? Did you buy the phone second-hand?
  3. Bedivir

    Bedivir Lurker

    I also think that this is the problem with IMEI
  4. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    If you scan for networks can you see any? If not it may be a hardware failure.

    Otherwise you could check the SIMs work in another device, but the chances of both failing at once are very small. So the possibility that the phone has been blacklisted (if you don't know its history, or if you broke a contract yourself) is a plausible explanation for this.
  5. alphonce

    alphonce Lurker
    Thread Starter

    Thanks for the input I bought it new first user......if the IMEI is blacklisted how can i get it right working again
  6. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    If you bought it new, as the first user, then the IMEI should not be blacklisted. Blacklisting is normally done to render a stolen phone inoperative (note that "stolen" includes "someone bought the phone at a subsidised price as part of a contract then decided to stop paying the contract payments and sold the phone" - the service provider considers that to be theft, since they broke the contract before paying off the phone, and blacklists the handset).

    A much rarer reason is if someone "clones" your IMEI. If two phones with the same IMEI are detected on the network this will be seen as a sign of wrongdoing, and most likely blacklist that IMEI (blocking both phones). This is why you never post your IMEI in public.

    Unfortunately if it is blacklisted it can be very hard to do anything about it. Providers are usually unwilling or even unable to remove a blacklisting if the reason is that the phone is listed as stolen (for obvious reasons: there's no disincentive to theft if someone can just call up and get the blacklisting removed). Ironically the main reason for "cloning" (reprogramming the IMEI) is because the original IMEI has been blacklisted - I should add tha the practice is also illegal in many countries, and I do not recommend that as a solution! Hopefully your problem will not be due to blacklisting.

    I suggest speaking to your service provider to check whether they have any idea what the problem is. You can also tell them your IMEI and ask them to check it isn't blacklisted.

Sony Xperia Z5 dual Forum

The Sony Xperia Z5 dual release date was October 2015. Features and Specs include a 5.2" inch screen, 23MP camera, 3GB RAM, Snapdragon 810 processor, and 2900mAh battery.

October 2015
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