I'm experiencing ongoing poor interior network signal strength... I contacted ID Mobile, regarding this issue. After some very basic troubleshooting which unfortunately didn’t help, they decided to send me a replacement SIM card. The new SIM card works as well as the one it replaced, but the problem is the interior network signal strength.Public Wi-Fi is only feasible when it’s verified as being genuine and when it accepts VPN usage. Otherwise, the security concerns outweigh the benefits.Are there any options regarding improving the signal strength?Any help and advice gratefully received.