My Mom will use it so it's only for messaging (viber and messenger) I just need a phone that is MATIBAY. I compared at the Samsung Website and all the specs are almost identical.

Main Differences I saw:
A26 P17,990 CPU: 2.4 GHz, 2 GHz , MicroSD (Up to 2TB), SIM 1 + Hybrid (SIM or MicroSD), No Stereo
A36 P21,990 CPU: 2.4 GHz, 1.8 GHz, No External, SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM, Stereo
A56 P25,990 CPU: 2.9 GHz, 2.6 GHz, 1.9 GHz, No External, SIM 1 + SIM 2 / SIM 1 + eSIM / Dual eSIM, Stereo

I am leaning towards the A26 because it has external storage and my Mom doesn't really need an eSIM. I am only considering the A56 because my impression is it's more matibay because it's more expensive?

Lazada sells it much cheaper but I don't feel safe buying a phone in Lazada