Is the problem my old or t-mobile network?

Thank you for your answer!!

I get alerts when I have 50% and 80% of my data left and I usually don’t get either of those texts, meaning I am under that usage. With T-Mobile connect, all data turns off when you hit the limit, so I wouldn’t be able to use it right now but I can.

It says roaming is off. I have low power mode on a lot due to the low battery power of my older phone, could that be it?

Iowa city ‘appears’ to have “OK” service, but most appears to be ‘midband’ (i.e. shorter range / weaker signal strength).

cellmapper.net will show where service is weak/where towers are - but isn’t 100% accurate (geotagged/crowdsource) in many areas.

Check your service at Kirkwood Community College / Iowa City Highschool.

I suspect that all carriers are colocated in the city (sharing towers in many places), and being primarily midband vs lowband, Verizon/AT&T will end up with stronger service.

Low power and power saving options can impact network and radio performance.  Perhaps try tuning that off to see if it helps.

In cellmapper.net (web page, not app), select Menu → Provider, 310260

Network → 4G LTE, Band →  All

 

The ‘dots’ are samples ‘.  Green being ‘best’, Red being worst.  Black being basically ‘No Service’.

 

Thank you!!!!!!! Looks like t mobile has the best coverage… I guess it may also be my older phone and the low power mode thing

Anywhere in the red circled area is crap right now, and has been since the derecho. You get signal but very slow to nonexistent data, but text and calls can go through.  The blue area terrain blocks the signal from the cell towers to the East.  Even Verizon has issues going W on Highway 6.