Personally switched from VZW to Google Fi. It's on TMOs network. As you can imagine, when engaging with Google's support was hilarious when there was something I needed, but overall I don't miss Verizon and pay drastically less.
Is Google Fi particularly cheap? Their normal prices seem to start at $35/month for 30GB of data which is more than Verizon's Visible plans at $25/month. (The current 50% off offer on Google Fi does seem a good deal though.)
I ended up switching to Mobile-X since I'm on wifi so much I only use a few gigs of data a month. $2/month + $1.90/GB vs Google Fi's flexible plan of $20/month + $10/GB.
> Is Google Fi particularly cheap?
If you travel internationally, they're really cheap relative to everyone else who will charge you absolutely ridiculous roaming fees.
I just buy local eSIM's online when I go abroad now. Lycamobile is usually good around Europe if you land in a country with them. Their UK and Portugal subsidiaries are £5 or €4 / month with 30-50GB in country including 12GB roaming in other European countries. Order before you go and get the eSIM QR code by email. But you must be in the appropriate country to activate.
The Google Fi plans with roaming are either $65/month (100GB) or $20/month + $10/GB. I often end up using quite a bit of data abroad.
My Google Fi is $20/m for connectivity and then $0.01/Mb until I hit 6Gb ($80) at which point everything after is no cost. Most of my data is on wifi, so my bill rarely goes above $25
I usually end up paying about $5/month, though that is a data only plan as I just use Google Voice for calls and use maybe a couple of gigs of data.
Having moved here from the UK where I was used to cheap mobile plans I just grate at how extortionate they are in the US.
For those of us who have crappy coverage with TMO, Verizon themselves offer a much better alternative to their postpaid service, called Visible. It's pretty hilarious how much better of an experience it is, and you are on the same network.
I haven't had any issues with tmobile coverage (that wasn't also a problem with verizon) in well over a decade now. Hell it even worked well in the dense hilly jungles of burundi. Verizon customer service was so bad before I switched I swore them off for life....
The single place I noticed verizon gets coverage and tmobile doesn't is three levels underground in a concrete parking garage.
Coverage is very specific to your situation. I've had basically no coverage on Verizon in offices in the Bay Area where T-mobile worked fine while colleagues could only get Verizon at home.