leafChoose by phone, then by adapter
| Connection | iPhone | Android |
|---|---|---|
| Bluetooth Low Energy (BLE) | Supported transport | Supported transport |
| Bluetooth Classic / SPP | Not supported for generic adapters | Supported transport |
| Wi-Fi / TCP | Supported transport | Supported transport |
Leaf Pro talks to ELM327-style adapters over these transports. That does not mean every device sold with an ELM327 label works correctly. The adapter must handle the Leaf’s diagnostic requests and multi-frame replies reliably. Check the exact model, firmware and return policy.
For iPhone: look for BLE or Wi-Fi
A cheap Classic-only Bluetooth dongle will not become compatible with iPhone because it appears in a Bluetooth list. Generic serial Bluetooth and Bluetooth Low Energy are different connection types. Choose a model explicitly offering an iOS-compatible BLE or Wi-Fi connection. Leaf Pro discovers suitable BLE characteristics rather than requiring one fixed adapter name.
For Android: all three connection types are options
Android can use BLE, Classic SPP and Wi-Fi. Leaf Pro’s device picker combines BLE and Classic discovery into one list. Some adapters advertise separate names for their iPhone and Android modes; select the appropriate device and let the connection type shown by the app guide you.
Wi-Fi has one extra step
Join the adapter’s Wi-Fi network in your phone settings before connecting in Leaf Pro. Many adapters use 192.168.0.10 on port 35000, but use the values in your own adapter’s manual. The network may have no internet. That can interrupt map loading or online services while the car readings themselves still work.
Before you buy
- Confirm the exact radio type; “Bluetooth 4” in a listing is not a substitute for explicit BLE support.
- Look for documented Nissan Leaf compatibility, reliable firmware and a seller who accepts returns.
- Check the adapter’s sleep behaviour and manufacturer guidance before leaving it plugged in.
- Avoid products that claim to repair degradation, restore capacity or improve SOH through a software reset.
- If using an adapter with several apps, close the other diagnostic apps before connecting Leaf Pro.
Connect while parked
- Park safely and locate the OBD-II socket using your vehicle manual.
- Fit the adapter without forcing it and power the car as required by the adapter instructions.
- Open Leaf Pro’s Adapter page, grant the requested connection permission and scan.
- Tap the device, wait for actual vehicle readings, and confirm the detected model and battery pack.
- For Wi-Fi, join its network first and enter its TCP address and port.
If the connection stalls, follow the connection troubleshooting guide. If it connects but a particular value is blank, check missing readings; an adapter link does not prove that every ECU answered.