This year's CES trade show in Las Vegas is coming to an end, with many stories and 'wow' experiences created across a lot of displayed consumer, automobile and mobile products. Our analysts from WDS (Wireless Device Strategies) research service are in Las Vegas to watch and experience those thrilling products the whole this week.

You can read our daily blogs from Day 1, Day 2 and Day 3 along with pre-blog.

These are three key trends and important device models that our analysts have identified at the event on Day 4 (Thurs):

1. Various Operating Systems for Smartwatches to be Showcased during CES 2015: While the global smartphone industry is dominated by two major OS's, Android (from Google) and iOS (from Apple), which many people dub them as 'two-horses races', it is likely that we are going to see some more various operating systems in global smartwatch industry, on top of Google (Android Wear) and Apple. Tizen, on which Gear 2, Gear 2 Neo and Gear S from Samsung are built upon, is already capturing the number one market share in global smartwatch shiments in Q3 2014, and Samsung is expected to enlarge its Tizen ecosystem for their wearable strategy. The second cadidate is WebOSon which LG is building its 'G Watch R' device customized for its smart car partner, Audi. Undoubtedly LG is one of strong champions of Android Wear based smartwatch, so it is still not clear whether LG will sell WebOS-based versions to the general public. The third candidate is a customized Alcatel own proprietary OS implemented on their Alcatel One Touch Watch. Strikingly, this Watch product is speculated to be compatible with all the major smartphone OS's such as Android, iOS and WindowsPhone. Android device vendors are using smartwatches as a new inflexion point to try to break free from the shackles of Android. 

2. Dozens of Price-Friendlier LTE-Capable Smartphones to Flood the Hall: 4G LTE-capable smartphones have been regarded expensive until the end of 2014, but we are seeing more and more OEM's displaying price-friendlier 4G LTE smartphones, priced below US$400 to $450 retail, at CES 2015 from Samsung, Huawei, TCL-Alcatel, Lenovo, ZTE, ASUS and Acer. A growing number of users from developed to developing countries don't want to spend much money to buy 4G smartphones, but as they are hungry for faster LTE services, device vendors are targeting to tap into this market as another high-revenue generating chance. Samsung didn't launch the new smartphones this year at CES 2015, but is showcasing less priced Galaxy A3 and A5than premium Galaxy S and Note series, and TCL-Alcatel is unveiling its new lower-priced 4G smartphones dubbed Pixi 3 (4.0/4.5/5.0 inch) and the new line of POP 2 line-ups in three different sizes. Huawei displays Budget LTE Handset Honor 4X in the CES 2015 with 3,000 mAh battery. Also Lenovo is unveiling an affordable LTE smartphone, A6000 at CES 2015, which will be available in India later this month. ZTE's new phablet, Grand X Max +, will be hitting the US market at US$199, and two Taiwanese vendors,ASUS and Acer, are unveiling mid-priced 4G smartphones, ZenFone 2 and Liquid Z410.

3. Struggling, but still Powerful Vendors: Blackberry's showcased Passport looks good with the stonger support of Android applications, and this vendor is gearing towardsIoT and BBM monetization. HTC is quite bullish about 2015, and is expected to focus onflagship leadership, Desire family, software, services and connected products. Microsoft is segmenting their target markets into three areas, from high-end to affordable to first, and they are ready to release the appealing products for each segment. Sony didn't bring its new Xperia Z4 to the general publich here, but as this Japanese vendor is focusing on smart home during CES 2015, we believe that Sony will try to gain more traction in mobile space with upcoming Xperia Z4 and the  SmartWatch 3 launched at CES 2015.

This has been the daily blogs from CES 2015, and we look forward to seeing you again at CES 2016 in wonderful Las Vegas.