Originally Posted by
draver
These performance anomalies are common in the US with the major carriers. When a location is accessed by too many native users, the service speeds suffer greatly despite the signal strength. I believe the roaming services typically default to the strongest signal despite the available bandwidth. If that carrier is overloaded by local users, your roaming lower priority will suffer greatly. Switching to another available roaming partner frequently solves the problem.
Here at home, Verizon actually offers a priority upgrade for a fee to their users, giving them first access to the available bandwidth.
We’ll my iPhone was on T Mobile high speed roaming and it sometimes connected to the same carriers as the Orange eSIM but would show different signal strength when I was away from cities.
In general I tried not to roam as much because I used up the 5 GB within 2 weeks in past trips so made sure not to update apps or podcasts unless I was tethered to the Orange eSIM hotspot.
I know that some carriers throttle their prepaid packages compared to postpaid.