The first one is MT6763:

– eight ARM Cortex-A53 cores, 2.0 GHz,
– ARM Mali-G71 MP2 GPU, 700mHz,
– display quality up to Full HD,
– eMMC 5.1,
– main camera up to 24mpx or double 13mpx, video up to 1080p,
– LTE modem supporting Cat. 6 connection.

Second one is MT6763T:

– eight ARM Cortex-A53 cores, 2.5 GHz,
– ARM Mali-G71 MP2 GPU, 770mHz,
– display quality up to 4k,
– eMMC 5.1,
– main camera up to 24mpx or double 13mpx, video up to 4k,
– LTE modem supporting Cat. 6 connection.

Differences between the two do not seem to be too large but, frankly, I know very little about processors. If any of you guys feel like it, feel free to tell me whether or not those two models are all that different. As for the first phone they will be used in, the rumour is that this honour will fall to Leagoo KIICAA S8, the most blatant Samsung ripoff that china has ever committed. Heh.