IPad Wifi IC Compatibility and Replacement Guide

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IPad Wifi IC Compatibility and Replacement Guide
Device
Affects part(s)
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Problem description

Many technicians encounter “No Wi-Fi”, grayed-out Wi-Fi toggle, or Wi-Fi IC overheat/no detection on iPads.

However, confusion often arises when sourcing replacement Wi-Fi ICs, because Wi-Fi-only and Cellular iPad logic boards use different Wi-Fi ICs — and they are not cross-compatible.

Installing the wrong variant will cause the Wi-Fi module to fail initialization, resulting in no Wi-Fi detection, no MAC address.

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Symptoms

• Wi-Fi toggle grayed out in settings.
• Wi-Fi MAC address missing in “About” section.
• Board heating around Wi-Fi IC area.
• Replacing with an IC from another variant (e.g., from Wi-Fi model to Cellular model) results in no detection.

Solution

Identify the correct Wi-Fi IC part number for the specific iPad model and variant (Wi-Fi or Cellular).

Always use the exact same IC model from a donor board of the same type.

Wi-Fi and Cellular iPads differ in the Wi-Fi/BT combo chip, RF routing, and antenna matching network, even when the logic board layout looks identical.

iPad Wi-Fi IC Compatibility Chart

iPad Model	Board Type	Wi-Fi IC Chip ID	Notes
iPad 6 (WiFi)	A1893	339S00446
iPad 6 (WiFi + Cellular)	A1954	339S00445
iPad 7 (WiFi)	A2197	339S00448
iPad 7 (WiFi + Cellular)	A2200, A2198	339S00445
iPad 8 (WiFi)	A2270	339S00448
iPad 8 (WiFi + Cellular)	A2428, A2429 (Global), A2430 (China)	339S00445
iPad 9 (WiFi)	A2603, A2604	339S00448
iPad 9 (WiFI + Cellular)		339S00445

Diagnostic Steps

1. Confirm Variant
   • Check back housing model (A****).
   • Cross-reference with Wi-Fi or Cellular variant.
2. Check Wi-Fi IC Reference
   • Use ZXW or BoardView to locate the Wi-Fi module part number.
   • Identify whether it’s 339S0058 (Wi-Fi) or 339S0059 (Cellular) etc.
3. Resistance / Power Test
   • Measure power rails next to Wi-Fi IC.
   • If shorted, isolate Wi-Fi IC.

Repair Steps

1. Disconnect battery and shield around Wi-Fi module.
2. Preheat board.
3. Use hot air to lift Wi-Fi IC carefully.
4. Clean pads, check for lifted traces.
5. Replace with correct Wi-Fi IC.
6. Reassemble and test Wi-Fi detection.