diff --git a/src/pages/login/index.module.scss b/src/pages/login/index.module.scss
index b6650e3..535d798 100644
--- a/src/pages/login/index.module.scss
+++ b/src/pages/login/index.module.scss
@@ -63,27 +63,6 @@
   margin-top: 32px;
 }
 
-// 手机号授权用原生 Button（open-type=getPhoneNumber），抹平默认样式与 .submit 对齐
-.submitBtn {
-  height: 96px;
-  margin-top: 32px;
-  background: $color-primary-grad;
-  border-radius: 48px;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  color: #ffffff;
-  font-size: 32px;
-  font-weight: 600;
-  line-height: 1;
-  padding: 0;
-  border: none;
-
-  &::after {
-    border: none;
-  }
-}
-
 .submitText {
   color: #ffffff;
   font-size: 32px;
diff --git a/src/pages/login/index.tsx b/src/pages/login/index.tsx
index 3060efd..5added1 100644
--- a/src/pages/login/index.tsx
+++ b/src/pages/login/index.tsx
@@ -1,15 +1,9 @@
 import { useState } from 'react'
-import { View, Text, Button } from '@tarojs/components'
+import { View, Text } from '@tarojs/components'
 import { useDidShow } from '@tarojs/taro'
 import { useAppDispatch, useAppSelector } from '@/store/hooks'
 import { setAuth } from '@/store/authSlice'
-import {
-  performWxLogin,
-  completeUserInfoLogin,
-  completeMobileLogin,
-  getLoginSubState,
-  type LoginSubState
-} from './wxLoginFlow'
+import { performWxLogin, completeUserInfoLogin, getLoginSubState } from './wxLoginFlow'
 import { useToast } from '@/hooks/useToast'
 import { ROUTES } from '@/constants/routes'
 import { reLaunch } from '@/utils/navigation'
@@ -22,8 +16,8 @@ export default function Login() {
   const toast = useToast()
   const token = useAppSelector((s) => s.auth.token)
   const [loading, setLoading] = useState(false)
-  // 注册中间态：needUserInfo（待头像昵称授权）→ noMobile（待手机号授权）→ null（初始/完成）
-  const [subState, setSubState] = useState<LoginSubState | null>(null)
+  // 注册中间态：needUserInfo（待用户资料授权）→ null（初始/完成）
+  const [needAuth, setNeedAuth] = useState(false)
   const [openId, setOpenId] = useState('')
 
   // 已有 token 直接进首页（本期不做 checkLogin 校验，spec D5）
@@ -31,25 +25,27 @@ export default function Login() {
     if (token && !loading) reLaunch(ROUTES.HOME)
   })
 
-  // 完整登录态校验与落地；未完成时推进 subState
+  // 完整登录态校验与落地；未完成时推进授权态
   const applyResult = async (result: Awaited<ReturnType<typeof performWxLogin>>) => {
     const state = getLoginSubState(result)
     if (state !== 'complete') {
       console.log('[login-page] 注册未完成，推进到', state)
-      // openId 兜底链：noMobile 阶段后端把 openId 放在 bindKey 字段返回（联调实测）；
-      // 其余阶段从本地缓存（needUserInfo 时已写入）兜底
+      if (state === 'noMobile') {
+        // 手机号授权暂缓（后端字段未定）：提示并保持当前态，等后端确认后接续
+        throw new Error('后端要求绑定手机号，该流程暂未开通')
+      }
+      // openId 兜底链：响应 openId → 本地缓存（needUserInfo 首次已写入）→ 当前 state
       const openIdNext =
-        result.openId ?? (state === 'noMobile' ? result.bindKey : undefined) ??
-        storage.get<string>(WX_OPENID_STORAGE_KEY) ?? openId
+        result.openId ?? storage.get<string>(WX_OPENID_STORAGE_KEY) ?? openId
       if (!openIdNext) throw new Error('响应缺少 openId，无法继续授权')
       setOpenId(openIdNext)
-      setSubState(state)
+      setNeedAuth(true)
       setLoading(false)
       return
     }
     if (!result.code || !result.userInfo) throw new Error('登录响应缺少凭证')
     console.log('[login-page] 登录完成，token 已落地')
-    setSubState(null)
+    setNeedAuth(false)
     dispatch(setAuth({ token: result.code, userInfo: result.userInfo }))
     await reLaunch(ROUTES.HOME)
   }
@@ -67,50 +63,20 @@ export default function Login() {
     }
   }
 
-  // needUserInfo：getUserProfile 授权头像昵称
+  // needUserInfo：getUserInfo 授权用户资料（后端文档约定的授权接口）
   const handleAuthUserInfo = async () => {
     if (loading || !openId) return
     setLoading(true)
     try {
       applyResult(await completeUserInfoLogin(openId))
     } catch (e) {
-      // 授权失败/取消：保留待授权态，用户可重试（getUserProfile 每次都需用户确认）
+      // 授权失败/取消：保留待授权态，用户可重试
       console.error('[login-page] completeUserInfoLogin 失败', e)
       toast.error(e instanceof Error && e.message ? e.message : '授权失败')
       setLoading(false)
     }
   }
 
-  // noMobile：手机号授权按钮回调（Button open-type=getPhoneNumber）
-  const handleGetPhoneNumber = async (e: {
-    detail: { iv: string; encryptedData: string; code?: string; errMsg?: string }
-  }) => {
-    console.log('[login-page] 手机号授权回调', {
-      errMsg: e.detail.errMsg,
-      // 两种手机号回传形态：新版 code（动态令牌）或旧版 iv/encryptedData（加密数据）
-      hasCode: Boolean(e.detail.code),
-      hasEncrypted: Boolean(e.detail.encryptedData)
-    })
-    if (loading || !openId) return
-    setLoading(true)
-    try {
-      applyResult(await completeMobileLogin(openId, e.detail))
-    } catch (err) {
-      console.error('[login-page] completeMobileLogin 失败', err)
-      toast.error(err instanceof Error && err.message ? err.message : '授权失败')
-      setLoading(false)
-    }
-  }
-
-  const submitText = () => {
-    if (loading) {
-      return subState === 'noMobile' ? '绑定中...' : subState === 'needUserInfo' ? '授权中...' : '登录中...'
-    }
-    if (subState === 'needUserInfo') return '授权头像昵称，继续'
-    if (subState === 'noMobile') return '授权手机号，完成注册'
-    return '微信一键登录'
-  }
-
   return (
     <View className={styles.page}>
       <View className={styles.hero}>
@@ -121,23 +87,14 @@ export default function Login() {
         <Text className={styles.slogan}>一起守护家人</Text>
       </View>
       <View className={styles.form}>
-        {subState === 'noMobile' ? (
-          // 手机号授权必须用原生 Button open-type，微信弹官方授权框
-          <Button
-            className={styles.submitBtn}
-            openType="getPhoneNumber"
-            onGetPhoneNumber={handleGetPhoneNumber}
-          >
-            {submitText()}
-          </Button>
-        ) : (
-          <View
-            className={styles.submit}
-            onClick={subState === 'needUserInfo' ? handleAuthUserInfo : handleWxLogin}
-          >
-            <Text className={styles.submitText}>{submitText()}</Text>
-          </View>
-        )}
+        <View
+          className={styles.submit}
+          onClick={needAuth ? handleAuthUserInfo : handleWxLogin}
+        >
+          <Text className={styles.submitText}>
+            {loading ? '登录中...' : needAuth ? '授权用户信息，继续' : '微信一键登录'}
+          </Text>
+        </View>
       </View>
     </View>
   )
diff --git a/src/pages/login/wxLoginFlow.ts b/src/pages/login/wxLoginFlow.ts
index 9bb5458..b6bfa84 100644
--- a/src/pages/login/wxLoginFlow.ts
+++ b/src/pages/login/wxLoginFlow.ts
@@ -62,11 +62,12 @@ async function reloginWith(
   return result
 }
 
-// needUserInfo 二次授权：getUserProfile 拿 iv/encryptedData → 重调登录接口补用户资料
+// needUserInfo 二次授权：getUserInfo 拿 iv/encryptedData → 重调登录接口补用户资料
+// 后端文档约定：wx.login 返回 needUserInfo 时须用 wx.getUserInfo 授权（getUserProfile 拿的资料后端不认）
 export async function completeUserInfoLogin(openId: string): Promise<WxMiniappLoginResponse> {
   let profile: { iv: string; encryptedData: string }
   try {
-    const r = await Taro.getUserProfile({ desc: '用于完善会员资料' })
+    const r = await Taro.getUserInfo({ withCredentials: true })
     profile = { iv: r.iv, encryptedData: r.encryptedData }
   } catch (e) {
     throw new Error(e instanceof Error ? e.message : (e as { errMsg?: string })?.errMsg || '授权失败')
@@ -75,8 +76,7 @@ export async function completeUserInfoLogin(openId: string): Promise<WxMiniappLo
 }
 
 // noMobile 三次授权：手机号授权按钮回调（open-type=getPhoneNumber）→ 重调登录接口
-// detail 两种形态：新版含 code（动态令牌，后端可直连微信换取手机号）；
-// 旧版含 iv/encryptedData（需与 session_key 解密，依赖同一 code 会话）
+// 暂缓接入（后端读取字段未定，等联调确认）；保留实现以便接续
 export async function completeMobileLogin(
   openId: string,
   detail: { iv: string; encryptedData: string; code?: string; errMsg?: string }
diff --git a/tests/unit/login/wxLoginFlow.spec.ts b/tests/unit/login/wxLoginFlow.spec.ts
index 04c1a57..d852857 100644
--- a/tests/unit/login/wxLoginFlow.spec.ts
+++ b/tests/unit/login/wxLoginFlow.spec.ts
@@ -2,12 +2,12 @@ import { describe, it, expect, beforeEach, vi } from 'vitest'
 
 const mockLogin = vi.hoisted(() => vi.fn())
 const mockGetAccountInfo = vi.hoisted(() => vi.fn())
-const mockGetUserProfile = vi.hoisted(() => vi.fn())
+const mockGetUserInfo = vi.hoisted(() => vi.fn())
 vi.mock('@tarojs/taro', () => ({
   default: {
     login: mockLogin,
     getAccountInfoSync: mockGetAccountInfo,
-    getUserProfile: mockGetUserProfile
+    getUserInfo: mockGetUserInfo
   }
 }))
 
@@ -51,7 +51,7 @@ beforeEach(() => {
   mem.clear()
   mockLogin.mockReset()
   mockGetAccountInfo.mockReset()
-  mockGetUserProfile.mockReset()
+  mockGetUserInfo.mockReset()
   mockWxMiniappLogin.mockReset()
   mockLogin.mockResolvedValue({ code: 'wx-code-1' })
   mockGetAccountInfo.mockReturnValue({ miniProgram: { appId: 'wx-appid-live' } })
@@ -136,11 +136,12 @@ describe('needUserInfo 首次登录分支', () => {
 })
 
 describe('completeUserInfoLogin 二次授权', () => {
-  it('getUserProfile → 换新 code → 带 iv/encryptedData/openId 重调登录', async () => {
-    mockGetUserProfile.mockResolvedValue({ iv: 'iv-1', encryptedData: 'enc-1' })
+  it('getUserInfo(withCredentials) → 换新 code → 带 iv/encryptedData/openId 重调登录', async () => {
+    mockGetUserInfo.mockResolvedValue({ iv: 'iv-1', encryptedData: 'enc-1' })
     mockWxMiniappLogin.mockResolvedValue(result({ openId: 'o-need' }))
     const res = await completeUserInfoLogin('o-need')
     expect(res.code).toBe('tk-abc')
+    expect(mockGetUserInfo).toHaveBeenCalledWith({ withCredentials: true })
     expect(mockWxMiniappLogin).toHaveBeenCalledWith({
       appId: 'wx-appid-live',
       code: 'wx-code-1',
@@ -151,13 +152,13 @@ describe('completeUserInfoLogin 二次授权', () => {
   })
 
   it('用户拒绝授权（errMsg 形状 reject）抛带 message 的 Error', async () => {
-    mockGetUserProfile.mockRejectedValue({ errMsg: 'getUserProfile:fail auth deny' })
-    await expect(completeUserInfoLogin('o-need')).rejects.toThrow('getUserProfile:fail auth deny')
+    mockGetUserInfo.mockRejectedValue({ errMsg: 'getUserInfo:fail auth deny' })
+    await expect(completeUserInfoLogin('o-need')).rejects.toThrow('getUserInfo:fail auth deny')
     expect(mockWxMiniappLogin).not.toHaveBeenCalled()
   })
 
   it('授权成功但换 code 失败：抛错且不发起登录请求', async () => {
-    mockGetUserProfile.mockResolvedValue({ iv: 'iv-1', encryptedData: 'enc-1' })
+    mockGetUserInfo.mockResolvedValue({ iv: 'iv-1', encryptedData: 'enc-1' })
     mockLogin.mockRejectedValue({ errMsg: 'login:fail' })
     await expect(completeUserInfoLogin('o-need')).rejects.toThrow('获取微信登录凭证失败，请重试')
     expect(mockWxMiniappLogin).not.toHaveBeenCalled()