Mayotte → Thailand
Mayotte plugs
Thailand plugs
Shared plug type: C
Compatibility: Compatible
Voltage — Mayotte 230V — Thailand 220V
Voltage difference is small. Most electronics will work safely.
Device compatibility (phones)
Phones almost always support 100–240V, so yours should work safely. Check your charger label to confirm.
You likely only need a plug adapter (if socket shapes differ). Voltage is close between these countries.