Saint Helena → Qatar
Saint Helena plugs
Type GQatar plugs
Type GShared plug type: G
Compatibility: Compatible
Voltage — Saint Helena 230V — Qatar 240V
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.