United States → Mexico
United States plugs
Mexico plugs
Shared plug types: A, B
Compatibility: Compatible
Voltage — United States 120V — Mexico 127V
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.