I have a situation I am hoping someone can assist with.
I've had my HTC ONE M8 for a while now, even replaced it the first month as my family's iPhones had better LTE reception. They would have LTE when I had 3G. However, at my work the LTE was stable on band 25. Over the past month or two it appears that Band 26 LTE has been activated in my area, zip 45342 with cross streets of Byers Rd and Benner Rd. My previously stable LTE connection is now connecting to band 26 and then dropping to 3G, and it is doing so about twice a minute.
I can access the ##DATA# and disable Band 26 which allows it to remain on a stable Band 25 LTE connection.
However, I discovered today that if I access *#*#4636#*#*, go to Phone Information, then press the three dots on the top right and then "Select radio band", I can then press on USA Band, Cellular (800-Mhz Band), PCS (1900-Mhz Band) and then Secondary 800-Mhz Band. Once I do that and exit those options, my phone then keeps a LTE connection...even a better connection than normal and it even stays on Band 26.
If I restart the phone, the symptoms return unless I go back to that 4636 menu and perform those steps again. Any ideas?