Why can’t a mobile phone know to stop using a very faint WiFi signal and to automatically check for much faster 4G or 5G signals?

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Regularly as I’m leaving my home or my two stores where I often use Wifi because of poor reception I have to switch OFF my WiFi on my mobile phone because it just churns and churns trying to use the weak signal when I do a search or use google maps or something. Why is this? I don’t understand how a technology like a mobile phone made in 2019 or 2020 or later cannot regularly “test” other channels of bandwidth to make sure it’s using the most efficient one.

I promise this isn’t meant to be a tech support question. I feel like there is a universal reason for this that just hasn’t been explained well yet or something. This is something that seems to have always existed no matter what phone I use and a lot of other people I know have the same experience. I’m thinking there has to be a simple explanation and that it’s not just something wrong with my phone.

Note: Before anybody brings it up, yes eventually if I go far enough away it will start using my 4G service. However, if in my travels I end up being close to my internet service providers many hotspots, it will try to use that and all of a sudden my searches start to take forever or don’t work because, again, it appears that it doesn’t mind that the WiFi signal is very weak and slow while it would be much quicker if it just stayed on the 4G.

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4 Answers

Anonymous 0 Comments

they can. iOS calls this setting “wifi assist” and it can be turned on or off in settings.

Why it’s not more popular or aggressive probably because cellular typically:
– is more expensive 
– has much smaller caps
– has lower throughput 
– has higher latency 

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