Providers and support

Hereby I like to open a topic about the network providers. Mainly to discuss the pro’s and con’s. The support, the network coverage / signal quality. What’s allowed / prohibited in the networks (like direct access to your online server). How many message’s is the limit per day? Is the sim usable outside of the country of issuing?

Maybee a list like:

Provider: T-Mobile (NB-IoT)
Location: NL (Gelderland)
Signal strenght: 14-19 with AT+CSQ

Currently I’ve no connection, I’ve two sims, one from the early access program, that one is not allowed anymore I guess. The other won’t receive an address. The support is responding but most of the times after 4-6 days.