iPhone 13 Iphone SE and 13 have less wifi coverage than my old iphones. why?

[britpoprule]

I have the Iphone SE (2020) and the iphone 13. Unfortunately they have less wifi coverage (notches) than my old iphones 6 and 7. The iphone 6 and 7 tend to have more coverage in a longer distance. Why is that? It's really strange. Logically (being an upgrade) they should be stronger in coverage. Sometimes the wifi switches to the 4G of the phone network. It's very annoying. What do you think?

I just compared my iphone 13 with somebody else's iphone 13 and mine has less wifi coverage. When the other has 3 notches mine has 2. Does it mean that it's defective?

 

[Paddle1]

It's hard to tell where the problem is. Wi-Fi standards have changed over time so it could be a compatibility thing with the router.

 

[bzgnyc2]

I have the Iphone SE (2020) and the iphone 13. Unfortunately they have less wifi coverage (notches) than my old iphones 6 and 7. The iphone 6 and 7 tend to have more coverage in a longer distance. Why is that? It's really strange. Logically (being an upgrade) they should be stronger in coverage. Sometimes the wifi switches to the 4G of the phone network. It's very annoying. What do you think?

I just compared my iphone 13 with somebody else's iphone 13 and mine has less wifi coverage. When the other has 3 notches mine has 2. Does it mean that it's defective?

Did you acquire these phones recently or is this a new phenomena?

It might be helpful for debugging purposes to get precise signal strength readings from the two phones at the same time connected to the same base station. Downloading the Airport Utility and the enabling the WiFi scanner seems to work pretty well for this (just ignore the part about searching for an AirPort base station):

How to measure Wi-Fi signal strength in d… - Apple Community

discussions.apple.com

If two identical models of iPhone with the same OS (and therefore presumably the same device firmwares, etc), see significantly different Wifi signal strength, I would say something is wrong. If you bought this phone refurbished or had it serviced, perhaps a technician messed up one or more of the antennas?