Tep is a pocket WiFi device with no data limit that you can rent for €7.95/day. To rent the device, you provide Tep with your travel details and they mail the device to your home/hotel, or you can pick it up from select airports.
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Pros
Pro Good price for Europe
At €7.95 a day, with unlimited data, the Tep is considerably cheaper than other options.
Pro Covers almost all European countries
The Europe plan has coverage for almost all 44 countries in Europe (only 6 aren't covered: Andorra, Montenegro, Serbia, Bosnia and Herzegovina, Moldova and Macedonia).
Pro Advertised speeds are accurate in real-life use
Tep claims to provide a download speed of around 7.2 Mbps while in 3G areas, with 5.8 Mbps of upload speed. During Engadget's review, the specification speeds where achieved in real world usage. That said, speeds are very dependent on the particular country and geographic area you're in.
Pro Supports 5 simultaneous connections
The Teppy supports up to 5 simultaneously connected devices.
Pro Handy WiFi emissor
Tep Wireless uses Teppy, a very portable (4.2 x 2.3 x 0.5 inches) handheld WiFi emissor that has front display showing signal strength and battery life (maximum of 8 hours in use and 20 hours in standby mode). You can also use it to keep track of data consumption.
Cons
Con Getting 4G coverage will cost extra
The default speed is 3G, getting for 4G is an extra that costs €1.85/day.
Con Limited country coverage
Tep has a more limited country coverage than other competitors, like, for example, XCom Global.
Con Some people have had customer support issues
A quick browse through international travel forums show that people have had occasional issues with customer support. This blog post covers one travelers particularly bad experience with the company earlier in 2013. It should be noted though that the majority of consumer reviews are positive.