Tell me about the 4G that looks good.

Recently in the project to use mobile terminal equipment, naturally inevitably need to remove the mobile network problems.

Saying that many leaders actually do not know the technology, always like blind pursuit of new, like to discuss 4G.

In fact, through my many aspects of understanding, (well ~ My daughter-in-law also want to start a kidney six, so carefully analyzed a bit)

In fact, 4G is still in a very impractical stage, so we still choose to Unicom 3G best.

In fact, now so-called Fdd-lte and Td-lte can not be called 4G, can only be said to be 3.9G.

The real 4 G is required to meet the lte-advanced standard.

But then come back, the downstream 300M and downlink 1G actual experience will not be too much, after all, 10M bandwidth can now be smooth to see 1080P video is not.

As for the TD-FDD will not need user attention, a little technical differences, more or consider the benefits and services.

However, if you usually just use to look at the Web, chat QQ or, then I suggest you choose Unicom 3g,45m bandwidth enough for you to use,

Watching the video is a problem with rice. If you travel a lot, and call the main, then mobile Global, call quality, signal coverage wide, of course

The mobile slag net is not considered. At least to see a web chat QQ is no problem.

In short, unless you do not talk, it is not recommended to use 4G, the reason may be broken down below.

The biggest feature of the 4G is that it provides over 100M of peak network bandwidth, but the problem that can never be solved is the problem of network and call conflict.

After entering the 4G era, three kinds of solutions were derived from the voice calling field, which were "CSFB" (Circuit switched Fallback),

"Sglte" (SIMULTANEOUSGSM and LTE) and "VoLTE" (Voice over LTE).

CSFB: One of the call networking

Any 4G internet encounters a phone call problem, the basic can determine the choice of CSFB program, on behalf of the mobile phone has oppo Find7 and Apple iphone 5S and so on. The CSFB solution's mobile phone only has a set of RF chips, either for networking, or for calls, both of which can only be one. The biggest drawback of the scheme is that 4G Internet can not be switched to 2g/3g network in time, resulting in a short period of time the phone can not be dialed out, can not come in, after the phone also need to wait a while to switch to 4G network to continue the Internet. Want to minimize the impact, can only look forward to mobile phone manufacturers system updates and operator network optimization upgrade. If you are worried about missing an important call, you may be able to alert your business by calling SMS.

Sglte: Communication Network two not delay

Sglte (also known as "dual standby") The biggest feature of the mobile phone is the simultaneous built-in support for both LTE and GSM RF chips, can simultaneously achieve 2G calls and 4G networking. Representatives of such phones are Samsung Galaxy Note 3 n9008v and Lenovo Vibe Z2 Pro (K920), which appears to be a single card cell phone signal bar will also appear in the previous description of the 4g/3g and 2G two-line signal icon (Figure 7). Although the Sglte can simultaneously achieve the characteristics of Internet and call, but the two sets of radio frequency transmission system will also bring relatively higher power consumption, but also a fish and bear paw can not be combined with the Sequela bar.

VoLTE: Just think about it.

VoLTE should be the best-in-class 4G call solution, which is an end-to-end voice scheme built on a 4G network that brings lower access latency (waiting time after dialing), and a drop-off probability close to zero. Unfortunately, before the 4G network was fully popularized, VoLTE was just the ideal "utopia", at least for a short period of time.

Integrated above, the personal feeling unicom 3G is still your best choice, and this time to start the 4G mobile phone, it is estimated that can not support volte, so the future is to change. Of course, the 4G package is still very suitable, so you can handle 4G contract machine, and then decisively disable the 4G network OK. Of course, I personally for the daughter-in-law of the six choice of kidney is determined, unicom package.

Tell me about the 4G that looks good.