See video on Amazon.com This is my third mobile wifi access point and I am delighted. Ignition is a little long, but after communication is stable with high performance speeds in 4G or 3G. Autonomy is very favorable. Be careful to pay particular attention to the choice of SIM cards. This topic is often discussed and sometimes underestimated. Personally I often travel in cyclorandonnée abroad. Therefore I often change my SIM card. Even within the same country I often have to juggle multiple SIM cards depending on network coverage and data volume limits. I am well aware that the extraction is often a bit tricky. One feels that the contact pads with the SIM card are of the "claws", they hang on the SIM card. So as some reviews say, SIM cards dual cutting can cause problems. But in reality this is only true for double-cut cards that leaves a game (one day) leading around the micro-SIM. That's why when I buy a SIM card I ask the physically see and I only accept SIM cards dual cutting whose micro-SIM card is fully enclosed in medium full frame WITHOUT ANY GAME (any day) on perimeter of the cut (see photo).