魅蓝可以在美国使用吗

魅蓝移动版可以，魅蓝联通版不可以。

1. 因为魅蓝移动版的4g网络是移动TD-LTE制式，而美国的4g网络是FDD-LTE制式的。

2. 目前魅蓝联通版可以，因为其4g网络是联通TD-LTE、联通FDD-LTE制式的。

3. 严格意义上来讲，LTE只是3.9G，尽管被宣传为4G无线标准，但它其实并未被3GPP认可为国际电信联盟所描述的下一代无线通讯标准IMT-Advanced，因此在严格意义上其还未达到4G的标准。

应该可以，没有锁的GSM手机都能用。
What phones are compatible with your network?
To use our network, you will need an unlocked GSM phone that supports one or more of the following frequencies:
1700/2100 MHz (3G / 4G or LTE depending on location)
1900 MHz (2G or 3G / 4G depending on location)
850 MHz (2G)
For the best experience, you should get a phone that supports the 1700/2100 MHz frequency. This will ensure that you get the fastest possible data speeds on our nationwide network.（推荐4G）
If your phone supports 1900 MHz, then you can get 3G/4G data speeds in some parts of the country, but it will not be nationwide.（1900MHZ有的地方只有3G的速度）
If you only need voice, text, and our slowest data speed, then you can use a device that supports 850MHz but none of the other frequencies listed above.
Most US phones are sold as tri-band or quad-band phones that got one or more of the frequencies above.
看了下他们官网，他们要求手机支持4G，3G, 2G，你可以去买手机的地方问问，一般手机硬件都支持。
其实T-MOBILE，virgin mobile也都不错。AT&T和verzion大公司的贵点但服务好

可以使用2G的网络。