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Will Your Galaxy S21 Ultra Charger Work With Oppo A79?

Cable, wall adapter, wireless charging & MagSafe compatibility (2026)

⚠️

Works but with caveats

Your Galaxy S21 Ultra charger works with the Oppo A79 — but charges slower than max speed. Upgrade your adapter for full 67W charging.

🔌 Cable

Compatible
Galaxy S21 Ultra: usb-cOppo A79: usb-c

Both use usb-c — your cable works. The Oppo A79 supports up to 67W (vs 25W) so you may want a higher-wattage cable for max speed.

Galaxy S21 Ultra
25W
max wired
Oppo A79
67W
max wired

🔋 Wall Adapter

Works but slower

Your 25W adapter works but charges the Oppo A79 at 25W instead of its 67W max. Upgrade to a 67W+ adapter for full speed.

Galaxy S21 Ultra
25W
max wired
Oppo A79
67W
max wired
Shop 67W+ fast chargers →

Wireless Charging

Incompatible

Oppo A79 doesn't support wireless charging, so wireless chargers aren't interchangeable.

Galaxy S21 Ultra
15W
max wireless
Oppo A79
N/A
max wireless

🧲 MagSafe

Incompatible

Neither phone has built-in MagSafe magnets. MagSafe chargers will charge via Qi at ~5W without magnetic snap.

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Frequently Asked Questions

Will my Galaxy S21 Ultra charger work with Oppo A79?

Your Galaxy S21 Ultra charger works with the Oppo A79 — but charges slower than max speed. Upgrade your adapter for full 67W charging.

Can I use my Galaxy S21 Ultra cable with Oppo A79?

Both use usb-c — your cable works. The Oppo A79 supports up to 67W (vs 25W) so you may want a higher-wattage cable for max speed.

Does MagSafe work with both phones?

Neither phone has built-in MagSafe magnets. MagSafe chargers will charge via Qi at ~5W without magnetic snap.

Can I wirelessly charge both phones with the same charger?

Oppo A79 doesn't support wireless charging, so wireless chargers aren't interchangeable.