代码： pattern: /^1[3456789]\d{9}$/

1.

 <a-form-item label="原手机号"   v-bind="validateInfos.contactTel">
          <a-input
            style="width: 600px"
            allow-clear
            :maxlength="20"
            placeholder="请输入原手机号"
            v-model:value="form.contactTel"
          />
        </a-form-item>
      </a-col>

2.

const rules = reactive({
  contactTel: [
    {
      required: true,
      message: '请输入正确的原手机号',
      type: 'string',
      pattern: /^1[3456789]\d{9}$/,
      trigger: 'blur'
    }
  ],
  iphone: [
    {
      required: true,
      message: '请输入正确的现手机号',
      type: 'string',
      pattern: /^1[3456789]\d{9}$/,
      trigger: 'blur'
    }
  ]
});