It's an easy matter to expand the phone types from ints to strings, although it will be a bit more work for your service to validate the incoming strings.

要将电话类型从整数扩展为字符串是一件很容易的事，虽然这样做将会为服务检查输入的数据带来一些工作量。

youdao

The variety of phone types that carriers offer is one area of competition.

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While instant messaging remains such a fragmented communication landscape, SMS (which bridges all phone types and carrier networks) retains a significant advantage.

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We've reached out for comment just to be sure, but until a patch is provided, keep your phone concealed from nosey types who read tech sites and have saint-like patience.

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