I use AT&T Uverse cable, Internet/wifi in home. I’m looking to boost our wifi to reach the kids rooms with a stronger signal and reduce their data usage on phones when wifi drops. We have heavy doors and ATT tech tested signal and kids rooms are about half what we get down stairs below where the original transmitter is. He recommended I get a Micro Cell for better mobile phone signals in house via ATT and a repeater for wifi extension. I found my old Linksys and would like to see if it will do the job?