Israel → Vietnam
Israel plugs
Type C
Type HVietnam plugs
Type AType C
Type FShared plug type: C
Compatibility: Compatible
Voltage — Israel 230V — Vietnam 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.