No signal

[JohnAH]

I have no indoor signal and limited outdoor signal (1 bar). This has been constant for 15 years. The O2 ap does not recognise the problem. How can I source a booster to collect signal from an aerial mast and make the signal available indoors? WiFi calling works for some outgoing calls: not for incomings and text messages often arrive after 10 mins which is no good for two factor authentication.

[MI5]

@JohnAH 

There are no legal boosters available to consumer contract customers.

If you are in a poor signal area the only option is to move to a network who gives better coverage in your area.