How to block unwanted telemarketing calls - 0303

How to BLOCK unwanted telemarketing calls - iPhone and Android

We constantly receive calls from telemarketers, and often they are unwanted calls, but now with the creation of the 0303 prefix to identify these calls it has become easier to block these calls, and to do this is very simple. How to block unwanted telemarketing calls - prefix 0303 To carry out the procedure you need to use an application [...]