diff --git a/Sources/DuooomiBleSDK/Core/BleClient.swift b/Sources/DuooomiBleSDK/Core/BleClient.swift
index 249620e..de5dffc 100644
--- a/Sources/DuooomiBleSDK/Core/BleClient.swift
+++ b/Sources/DuooomiBleSDK/Core/BleClient.swift
@@ -136,7 +136,9 @@ extension BleClient: CBCentralManagerDelegate {
         connectTimeoutWork = nil
         connectedPeripheral = peripheral
         peripheral.delegate = self
-        peripheral.discoverServices([BleUUIDs.service])
+        // 发现全部 service（与 expo 端 discoverAllServicesAndCharacteristics 行为对齐）。
+        // 某些固件传入指定 UUID 列表时返回空，需在 didDiscoverServices 自行过滤。
+        peripheral.discoverServices(nil)
     }
 
     func centralManager(_ central: CBCentralManager, didFailToConnect peripheral: CBPeripheral, error: Error?) {
@@ -177,7 +179,9 @@ extension BleClient: CBPeripheralDelegate {
             cb?(.failure(error))
             return
         }
-        guard let service = peripheral.services?.first(where: { $0.uuid == BleUUIDs.service }) else {
+        let services = peripheral.services ?? []
+        BleLog.d("Discovered \(services.count) service(s): \(services.map { $0.uuid.uuidString })", "BLE")
+        guard let service = services.first(where: { $0.uuid == BleUUIDs.service }) else {
             let cb = connectCompletion
             connectCompletion = nil
             cb?(.failure(DuooomiBleError.serviceNotFound))