正文
老姚感悟：市值2330億美元的全球最大電訊營運商、美國的AT&T公司，用854億美元買下市值680億美元的、美國時代華納-CNN-TNT-
但是，蘋果供應AT&T的iphone-7手機的芯片，目前是Intel公司Xmm7360型號的產品，手機型號是A-1778和1784，這讓在美國AT&T服務係統的【換妻們】止步不前，為什麽？
明年是iphone十周年大慶，i-7不會再生出i-7S了，i-7也沒有太多的變革，都留給十年紀念產品i-8了！這讓許多少數明白人，放棄i-7，等待i-8！
我買iphone還有一個小經驗是，iphone的電池平均壽命是2-3年。因為換電池在美國是80美元/三個月的保期，電池壞了不如買新的。因為電池的壽命，每兩年換一次機型，進兩級是最劃算的！Galaxy-S7的芯片速度比i-7快多了，但是這次敗在了電池上，曆史教訓不可不防！
我持有i-6兩年了，今年該換i-7跳兩級。由於住家地區AT&T型號比較強，一直認它為幹爸。AT&T的i-7現在被itel的芯片綁架，豈不現在換了i-7，速度卻是i-6S，兩年才升了一級，有點虧，還不如等i-8！
再等一年，有點煩，尤其是i-7Plus的雙鏡頭，讓我有點手癢癢，希望年底，AT&T能夠接受Q-Com芯片的i-7Plus！
請看兩種芯片比較的證據：
With the iPhone 7 and the iPhone 7 Plus, Apple elected to use LTE modems from two different sources, Qualcomm and Intel. The A1778 and A1784 iPhone models use a GSM-only Intel XMM7360 modem while the A1660 and 1661 iPhone models use a GSM/CDMA-compatible Qualcomm MDM9645M modem.
Apple's decision has already caused some disappointment among customers because the GSM-only Intel modem is not compatible with as many carrier networks as the GSM/CDMA Qualcomm modem, and now independent testing conducted by Cellular Insights suggests there are some significant performance differences between the two modems, with the Qualcomm modem outperforming the Intel modem.
Using an R&S TS7124 RF Shielded Box, two R&S CMW500, one R&S CMWC controller, and four Vivaldi antennas, Cellular Insights created a setup to simulate LTE performance at different distances from a cellular tower using two iPhone 7 Plus devices, one with an Intel modem and one with a Qualcomm modem.
The goal of the test was to measure the highest achievable LTE throughput starting at a Reference Signal Received Quality of -85dBm (a strong signal) and gradually reducing the power level to simulate moving away from a cellular tower where signal is weaker. Three LTE bands were tested: Band 12, Band 4 (the most common band in North America), and Band 7.
In all three tests, both the iPhone 7 Plus models offered similar performance in ideal conditions, but as power levels decreased, Cellular Insights saw "unexplainable sharp dips in performance" in the Intel modem, finding a gap "north of 30%" in favor of the Qualcomm iPhone 7 Plus. In the charts, the Qualcomm modem maintains noticeably higher throughput speeds than the Intel modem as signal strength decreases.
In real world conditions, this would suggest the Qualcomm modem does better in areas where the cellular connection is weak, with faster throughput speeds. Cellular Insights describes the Band 12 test below:
According to Cellular Insights, in every single test, the iPhone 7 Plus with a Qualcomm modem "had a significant performance edge" over the iPhone 7 Plus with an Intel modem.
For more information on the testing methodology and greater technical detail on the results, make sure to check out Cellular Insights' full comparison article.
Apple's decision has already caused some disappointment among customers because the GSM-only Intel modem is not compatible with as many carrier networks as the GSM/CDMA Qualcomm modem, and now independent testing conducted by Cellular Insights suggests there are some significant performance differences between the two modems, with the Qualcomm modem outperforming the Intel modem.
Using an R&S TS7124 RF Shielded Box, two R&S CMW500, one R&S CMWC controller, and four Vivaldi antennas, Cellular Insights created a setup to simulate LTE performance at different distances from a cellular tower using two iPhone 7 Plus devices, one with an Intel modem and one with a Qualcomm modem.
The goal of the test was to measure the highest achievable LTE throughput starting at a Reference Signal Received Quality of -85dBm (a strong signal) and gradually reducing the power level to simulate moving away from a cellular tower where signal is weaker. Three LTE bands were tested: Band 12, Band 4 (the most common band in North America), and Band 7.
In all three tests, both the iPhone 7 Plus models offered similar performance in ideal conditions, but as power levels decreased, Cellular Insights saw "unexplainable sharp dips in performance" in the Intel modem, finding a gap "north of 30%" in favor of the Qualcomm iPhone 7 Plus. In the charts, the Qualcomm modem maintains noticeably higher throughput speeds than the Intel modem as signal strength decreases.
In real world conditions, this would suggest the Qualcomm modem does better in areas where the cellular connection is weak, with faster throughput speeds. Cellular Insights describes the Band 12 test below:
Both iPhone 7 Plus variants perform similarly in ideal conditions. At -96dBm the Intel variant needed to have Transport Block Size adjusted as BLER well exceeded the 2% threshold. At -105dBm the gap widened to 20%, and at -108dBm to a whopping 75%. As a result of such a huge performance delta between the Intel and Qualcomm powered devices, we purchased another A1784 (AT&T) iPhone 7 Plus, in order to eliminate any possibility of a faulty device. The end result was virtually identical. [...]Cellular Insights also created a chart that compares the edge of cell performance of several different smartphones. The increasing numbers on the X-axis below represent increasingly poor signal strength, while on the Y-axis, a higher throughput number indicates better performance. The iPhone 7 Plus with an Intel modem demonstrates the poorest performance of all phones tested.
At -121dBm, the Intel variant performed more in line with its Qualcomm counterpart. Overall, the average performance delta between the two is in the 30% range in favor of the Qualcomm
According to Cellular Insights, in every single test, the iPhone 7 Plus with a Qualcomm modem "had a significant performance edge" over the iPhone 7 Plus with an Intel modem.
For more information on the testing methodology and greater technical detail on the results, make sure to check out Cellular Insights' full comparison article.
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