M1 and Grid has 1byte per block data while
redONE and zero1 has 1mb per block data.
You might not want your data counter to surge like a rocket.
https://en.ocworkbench.com/larger-d...g7GK0Gjzm1gNsWG4nr2Z-LozPXX2riazX2z48pHzwP5IY
Byte is the best.
Indeed the mb - 1000x more data is not fair to users.
Just to be clear...
1KB = 1024 x 1B = 1024B
1MB = 1024 x 1KB = 1,048,576B
M1/Grid (telcos) compute/charges in block(s) of 1B.
Zero1/RedONE (telcos) compute/charges in block(s) of 1MB (= 1,048,576B).
So on Zero1/RedONE: if got any 1B block sent will be compute as 1,048,576B sent -- more than 1 million times when compared to M1/Grid.
Whether you think more than 1 million times difference in compute/charges for data blocks between telcos -- is important or not -- is up to each individual.
If my telco mobile plan is less than 5GB (i.e. 1GB, 2GB or 3GB etc.) -- personally I'll avoid using Zero1/RedONE telcos.