點擊微信按鍵組件才能出授權，所以自定義樣式就是必須的了，來自網友的幫助，如下圖

<button class=‘btn1‘ open-type=‘contact‘>
    <image class=‘btnImg‘ src=‘../../images/客服.png‘></image>
    <view>聯系客服</view>
 </button>


.btn1{
  width: 200rpx;
  height: 200rpx;
  margin-top: 20rpx;
  background-color: white;
  color: #
 
999999;
  border-radius: 0rpx;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 30rpx;
}

.btnImg {
  width: 50rpx;
  height: 50rpx;
}

.btn1::after {
  border: 0; 
}

https://www.jianshu.com/p/93d7104be420

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微信小程序button組件樣式