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22-02-2021 11:19 PM
23-02-2021 01:32 AM
Don't think you can.
23-02-2021 10:46 AM - edited 23-02-2021 10:47 AM
Just remove the battery of the phone without switching it off. By doing this, it will start sending phone number not reachable tone to caller until you switch on the phone for https://testmyspeed.onl/.