The 5G Auto setting on iPhones intelligently switches between 5G and other networks like LTE based on signal strength, which can provide several benefits[1].
Benefits of 5G Auto:
* Enhanced speed and lower latency 5G Auto is designed to provide faster download and upload speeds and lower latency than LTE when 5G is available, improving browsing and streaming[1][8].
* Battery saving When 5G speeds do not offer a significant improvement, the iPhone automatically switches to LTE to save battery life[3][5][6]. The 5G Auto setting only uses 5G when required and switches to 4G if the LTE/4G reception is better[2].
* Smart Data Mode 5G Auto enables Smart Data mode, which helps to optimize data usage[3][4][6].
* Seamless transition 5G Auto allows iPhones to take advantage of 5G when available and seamlessly transition to LTE or 4G networks in areas with limited 5G coverage[1].
* Avoid dropped calls Using 5G Auto instead of 5G On may help prevent dropped calls[4]. If the coverage of the 5G technology is weak or nonexistent, the phone can switch to 4G or 3G[4].
Citations:
[1] https://comitsolution.com/blog/5g-technology-benefits
[2] https://www.reddit.com/r/iphone/comments/zvg8c6/5g_auto_vs_on/
[3] https://support.apple.com/en-my/108383
[4] https://www.telecomhall.net/t/should-i-turn-5g-on-or-auto/22175
[5] https://support.apple.com/en-us/108383
[6] https://www.igeeksblog.com/how-to-turn-on-off-5g-on-iphone/
[7] https://www.reddit.com/r/iphone/comments/1auiqr5/5g_or_lte/
[8] https://www.ibm.com/think/insights/5g-advantages-disadvantages