Spending on phone

1. What is at&t supporting recently?

   4G LTE? 5G LTE?

   Does this phone support that? If not, how much longer will at&t support the previous generation of network?

2. Does the phone have the following?

   1. Whatsapp
   2. Maps
   3. Possibly, android play store?

Phone options

1. Bestbuy usually have refurbished unlocked phones for cheaper prices
2. They include phones from companies that are not very popular but worth checking out.
   1. e.g. HMD (HMD Skyline is a good model)