In 2015, Apple's iPhone 6s "chip door" was so popular that the iPhone 6s processor was divided by TSMC and Samsung. The power consumption of the two was different, causing some consumers to rebound. Now the iPhone 7 A10 processor is composed of TSMC's exclusive foundry, but originally adopted a high-pass modem (modem), but this time is divided by Qualcomm, Intel supply, download speed and signal strength and then burst the difference, how to solve, Apple simply slow down the speed?
Does the iPhone 7 have both Qualcomm and Intel modem versions?From the specification table published by Apple's official website and the dismantling report of the dismantling website chipworks and iiFixit, the iPhone 7 has two versions of the Model A1660/1661 and Model A1778/1784 modems. The Model A1778/1784 version is rare and has fewer CDMA 2000 (including CDMA EV-DO) bands, which is considered the best evidence of Apple's adoption of Intel's modem, because even Intel's 2016 MWC is the latest modem. The XMM 7480 has not yet been integrated into the CDMA 2000 band.
(Source: Apple US official website)
The iPhone 7 version of the modem is Qualcomm X12 MDM9645M and Intel XMM 7360. In the case of Qualcomm's MDM9645M, it supports LTE Cat.12 (download speed up to 600 Mbps) and uplink LTE Cat.13 (upload speed up to 150 Mbps) through three-carrier aggregation, 256 QAM and 4X4 MIMO.
Although Intel's downlink supports triple carrier aggregation, it only supports Cat.10 (download speed up to 450 Mbps) and uplink to Cat.7 (upload speed up to 100 Mbps). The biggest difference between the two chips is the book. On the transmission speed, the Intel XMM 7360 also lacks EVS, DL-256QAM/UL-64QAM and 4X4 MIMO.
Qualcomm chips are not effective?In the previous October, Cellular Insights used the US operator Verizon and Sprint's unbound SIM version of iPhone 7/7Plus for testing. Both of them also used Qualcomm's MDM9645M. From the test results of the test equipment eNodeB, these The iPhone 7 Plus does not support 4&TImes; 4 MIMO and 256 QAM.
Cellular Insights later bought an AT&T iPhone 7 Plus with Intel modem, compared to the Verizon/Sprint Qualcomm modem version, and tested Band 4 at 4&TImes; 2 MIMO via closed-loop spatial multiplex transmission mode (TM4) (10MHz), Band 4 (20MHz) and Band 7 (20MHz) three commonly used LTE frequency bands in different countries, the network speed under different signal strength. Basically, the Qualcomm version in these three bands is on average 30% faster than the Intel version.
(Source: Cellular Insights )
This test has recently been proposed, as another mobile phone and APP performance optimization website Twin Prime Inc. questioned - Apple did not play the Verizon version of the performance potential.
According to data from Twin Prime Inc., the Verizon Qualcomm version of the iPhone 7 is slightly more efficient than the AT&T Intel version of the iPhone 7, but the Galaxy s7 is nearly twice as fast as the Samsung Galaxy s7, which also uses the Qualcomm X12 modem.
(Source:Bloomberg)
Twin Prime product director Gabriel Tavridis analyzed the data, indicating that the Verizon version of the iPhone 7 apparently did not activate all network functions. He questioned Apple's adjustment of the speed of the Verizon version of the iPhone 7 through tuning, so that the LTE performance of different modem versions of the mobile phone is not much worse.
It can also be seen from the test of Cellular Insights that the maximum throughput of the iPhone 7 and Galaxy s7 Edge with Qualcomm X12 and X12 4RX modules is not small.
(Source: Cellular Insights)
In response to Apple’s official response, each iPhone 7/7 Plus passed quality verification and product reliability testing, meeting or exceeding Apple’s wireless performance standards. Apple spokesperson Trudy Muller added that after testing in the lab and the real environment, There is no significant difference in the performance of any wireless communication module.
Is the two-handed strategy a plus or a deduction?Intel has always wanted to lay the groundwork in the mobile market, and even strive for market share through subsidies. Apple has better bargaining power and Intel talks about price codes. On the other hand, through the joining of Intel’s second supplier, A weakening of the original Qualcomm's bargaining power is conducive to future price negotiations on Qualcomm's goods. This is Apple's "two-handed strategy" in supply chain management, but analysts believe that this move does not bring extra points to Apple.
Tim McGregor, an analyst at TIrias Research, believes that there may be many factors that prompted Apple to make this decision, but in the end it could be a bad decision, which may be difficult for many consumers not to complain because the Qualcomm modem is The industry is indeed better. Mark Hibben, a well-known foreign financial website Seeking Alpha technology observer, also bluntly said that Apple's adoption of the Intel modem is a wrong decision, which reduces the performance of the entire iPhone 7 module, contrary to the basic value of Apple, and may even lose consumption. Mark Hibben estimates that the cost of each iPhone is less than $10 to $15, which doesn't seem to be worth it.
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