In terms of sales, the tri and quad band versions of the CECT P168 (aka iClone) are extremely close. Although the major difference between the two is the 850 band, there are a few other distinctions as well. I will discuss these in this article.
Of course, the main difference between the two is that the tri band version supports / 900 / 1800 / 1900 MHZ, while the quad band version has added the 850 MHZ. Whether this matters to you or not depends on which your carrier uses. A quick call to or visit on your network's website is usually all that is needed to find out. Generally, most networks work on a tri band phone, except for some AT&T regions that use 850. This is not set in stone, though. If you travel extensively, a quad band is probably not a bad idea to ensure that all bases are covered.
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Both phones look very similar and function identically. Both are dual sim, unlocked, flat screen phones with the finger touch interface. They allow you to surf the web, email, text, and send messages while watching and listening to MP3s and MP4s, taking photos on the built in digital camera, and enjoying Bluetooth. Both have removable batteries which frees you from having to depend on the manufacturer. Both have the well known import speakers that are very loud and sharp.
Obviously, both are made by Chinese manufacturer CECT who most believe make the best iPhone clones on the market. I have both models and like them very much. My use of unlocked phones saves me a lot of money and I like the bonus features of the clones. Having two phone numbers with the dual sim feature has been particularly useful and I really like having FM radio as well.
The quad band version did add a slide unlock feature, webcam, and upgraded firm ware. Also, the touch screen on the newer version feels firmer and a bit like glass, but this is a very minor change.
Believe it or not, they are priced similarly, usually in the low 0 range. However, the original tri band is usually more widely available. Which you chose will likely depend most greatly on your carrier and on your needs. Both are very high functioning phones with very high customer satisfaction and potentially a huge amount of savings over the life of the phone.
CECT P168 Tri Band Version Versus the Quad Band Version - A Comparison of the Differenceshtc desire unlocked