IPad Wifi IC Compatibility and Replacement Guide

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IPad Wifi IC Compatibility and Replacement Guide
Device	iPad 6, iPad 7, iPad 8, iPad 9, iPad 10
Affects part(s)	Logic Board, WiFi IC
Needs equipment	Hot Air Station, Reballing Stencil, Donor Board, Soldering Iron, Tweezers
Difficulty	◉◉◉◉ Specialist
Type	Soldering

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.

iPad 7,8 & 9 - (WiFi + Cellular Model) WiFi IC

iPad 7,8 & 9 - (WiFi Only Model) WiFi IC

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.

NOTE: When replacing the WiFi IC, ensure the new IC has the exact same part number as the original. Mismatched WiFi IC numbers are not cross-compatible and will result in no WiFi functionality.

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)	A2602	339S00448
iPad 9 (WiFI + Cellular)	A2603, A2604, A2605	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.