Nokia 3310 keypad 123 not working || Nokia 3310 call button not working 

#bismillahmobiles
Mobile phone repair technicians run tests to assess the mobile phones' functionality, install and update phone software, troubleshoot wiring problems, and replace damaged parts and components such as batteries, LCD screens, keypads, buttons. They also advise their clients on warranty issues and recommend products based on their expertise.
mobile device management