Linksys Wireless Router :: Wrt160 Wifi Loses Connection To Phone And Laptop

I have a WRT160 V2 router with firmware  v2.0.02. I have had the router for years without any problems. A few months ago I have started to see an issue where I lose connection to my internet on my laptop, and wifi on my phone at the same time. I have wifi calling on my phone and it disconnects also at the same time. All of a sudden, everything will stop working, then about 40 seconds later, it all works again. I lost the connection maybe every 30 to 60 mins. I rely on wifi calling for my primary phone, and I end up getting cut off when talking to people. BTW wifi calling is for all tmobile phones, but also normal wifi to surf the web on my laptop and phone drops too at the same time.