I am writing this from inside a steel narrow boat on the Oxford canal, the Huawei being connected to a 4GLTE antennae which I have fixed to a window. I appear to be getting 3G and access to some websites is (obviously) slower than from home landline but it is eminently usable and far superior to a TP Link which I bought to use in my house in Dorset and trialled in the boat, and found to be useless. The main (so far, only) downside to the Huawei is battery, which gives 6 hours meaning that if left on overnight it is (obviously) dead by morning. The trick is to leave it plugged in, provided you have 240volts via an inverter.
Great bit of kit does exactly as stated
super for Germany or Europe
I bought this unlocked device to replace an earlier 3G version. I have used in in the UK, France and South Africa without any problem. Occasionally in more remote areas where the signal has been weak I have attached a separate aerial which has boosted performance.