Upon examining the certified lab tested RF data and crunching some numbers, what is immediately apparent is that the iPhone XR has -- as expected -- dropped the 4x4 MIMO antenna design from the iPhone XS and XS Max in favor of a standard 2x2 MIMO antenna. This tradeoff of fewer antennas and MIMO channels, though, ostensibly has allowed for greater antenna gain and, concomitantly, higher radiated output power compared to those same metrics on the iPhone XS and XS Max.
Further analysis may be forthcoming, but for now, the graphs of the iPhone XR EIRP and antenna gain largely can speak for themselves.
For graphs and analysis of iPhone XS and XS Max lab tested figures, see my previous articles (1, 2, 3).
Source: FCC OET
I am thinking may be it is not only 4x4.
ReplyDeleteThe iPhone X also has problems as compared to iPhone 8. I am think if these has to do with its Stainless Steel casing, which ALL X / Xs series are using.
This is a very good hypothesis.
DeleteSo, I'm struggling to intrepret the data. It appears to me that the XR would have substantially better functionality than XS in low signal areas using 600 and 700 mhz ( bands 12, 17, 71)?
ReplyDeleteAny thoughts on how the XR might compare to the iphone 8+ or Samsung S9 in regards to functionality? I am primarily referring to the ability to make and recieve calls in very low signal areas with some rudimentary web browsing.
This is not an answer to anyone’s question just simply trying ask ask a question to this subject. I’ve been looking into this iPhone XR for a couple weeks. I’ve heard different things about the reception (lte). How is it now on 11/20/2018?
DeleteCould you please explain how to read the graphs?
ReplyDeleteIs closer or above to 200mW better?
My articles really are not intended for the general public and typical cellphone users, but rather for those who already have reasonable understanding of cellular RF communications. So, I may not always provide basic explanations of my analyses and graphs. That said, yes, uplink maximum EIRP closer to or greater than 200 mW generally is better.
DeleteAJ
Thanks for the answer!
DeleteI purchased the iPhone XR and have been very pleased with the performance in a very rural area. I was able to make calls and maintain an lte connection when several other phones could not even make a call.
ReplyDeleteThanks for making the information more accessible.
I realize this is off-topic, but would you be able to assemble graphs for the Note 9 Snapdragon model?
ReplyDeleteSo if I'm reading this XR graph correctly in 2020, compared to the ones you've done on the XS and XSMax, does this mean that the 2020 class action lawsuit against Apple by XR owners over "poor antenna and reception issues vs XS and XSMax" is doomed to fail, given that the XR with 2x2 MIMO looks better on paper than the "higher end" phones with 4x4 MIMO? Or do I totally not understand what you're showing here? Looking to buy a XR for use mostly in a rural area and news of the lawsuit is giving me pause - don't want to buy a phone if it won't work where I need it to.
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ReplyDeleteThe statement about the iPhone XR's trade-off between 4x4 MIMO, greater antenna gain, and higher EIRP (Effective Isotropic Radiated Power) is clear and concise, but it requires a certain level of technical knowledge to be accessible. The trade-off explanation should include a brief explanation of antenna gain and EIRP, as well as the benefits for users in terms of improved connectivity and signal strength. Comparative analysis should be conducted to provide context. The real-world impact of these changes could translate into better user experiences, such as faster data speeds or more reliable connections. Network compatibility should be discussed, and the statement should address how this technical change might influence consumer decision-making when choosing a smartphone. Future developments in wireless technologies and standards should be discussed, and sources and references should be provided. Visual aids should be used to visualize the concepts of antenna gain and EIRP. Potential downsides or trade-offs should be mentioned, and practical examples should be used to illustrate how users might experience the benefits of these changes. Reader engagement should be encouraged, and the statement should be kept updated about technical developments in smartphones and wireless technology. Proofreading should be done to maintain professionalism. By addressing these points, the statement about the iPhone XR's trade-off can become more informative and accessible to a wider audience.
The text provides a technical explanation of MIMO, antenna gain, and EIRP, as well as a detailed explanation of the trade-offs between the iPhone XR and 4x4 MIMO. It discusses the impact on performance, such as signal reception, data speeds, and overall connectivity, and the user experience, such as improved call quality, faster downloads, and better coverage in specific scenarios. It also compares the iPhone XR's antenna configuration to other iPhone models to provide context and ensure readers understand the terms used in the statement.New York Divorce No Fault
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The iPhone XR's strategic trade-off, substituting 4x4 MIMO for increased antenna gain and higher Effective Isotropic Radiated Power (EIRP), marks a calculated move toward optimizing signal strength and coverage. By focusing on amplifying antenna gain and EIRP, Apple aims to enhance network performance and reliability, ensuring a more robust and consistent connection for users. This deliberate shift underscores Apple's commitment to refining wireless capabilities, promising users improved connectivity and better overall network experiences, despite the adjustment in MIMO configuration.
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