Excerpt: To start off, I have to say that I've had this phone for almost 5 years before the battery finally gave up. And I kinda gave up on it as well, seeing as there are a lot more things to do with an Android device. :) I've had this phone ever since it was released in 2008, and I absolutely love it. When it finally broke (sort of) earlier this year I wanted to buy ANOTHER E66, but my father convinced me to try out other phones. Haha. For me, the E66 is the best phone ever.
Pros: Good internet speed, Keypad is comfortable, Audio quality is good, Small and sleek, Build quality is awesome. I love the aluminum feel, The interface is pretty smooth
Cons: Only 128MB RAM. :( I couldn't open larger PDF files because of this, 2.5mm earphones! It was a hassle to always bring 2 headsets, No threaded view
Excerpt: ITS GOOD PHONE BUT NOT THE BEST OF THE E SERIES BUT FOR SMALL AND GOOD SMARTPHONES ITS THE RITE ONE . IT LACKS A 3mm JACK REST ITS SIMILAR TO E71 NO CHANGE IN SPEC ITS SMALL AND COMPACT .WELL SOLID BUILT THOSE WHO HAVE A CRAZE FOR SLIDERS AND A SMARTPHONE U CAN GO FOR E66
Cons: IT HAS A LOW SOUND COMPARED TO OTHER SAME BUDGET PHONES, CAMERA COULD BE MORE BETTER
Summary: I love this phone... I have purchased this exact model for all my family and all of them love it. It comes in the right size, has a lot of software, includes all needed options (GPS, Bluetooth, 3.5G, videocall, Java support, Flash support, 8GB MicroSD memory support, Wifi...), lots of software from different providers, comes with Ovi store (with lots of free software for your Nokia), did I mention small? it is a powerful smartphone with a small size.
Summary: A smartphone that is not huge like the iPhone and Blackberries, e.g. it has Wi-Fi, GPS, Maps, Browser, RealPlayer, E-Mail, Office, Camera/Video, etc. but it's about the size of a RAZR (slightly taller but thinner). Same features as E71 but smaller. Solid construction, quality feel. I have not experienced either problem referenced by the other reviewer. Battery life is excellent, and the unlocking issue is not present.