It is not often that you face WiFi issues on the iPhone. Apple designed the smartphone to latch onto an already network pretty good. But there are always exceptions. It is not hard to boost the Wi-fi signal reception/strength on the iPhone when it feels like things are slowing down.
Here are few point one can try and follow to enhance the signal quality:
Restarting a router is one of the first things you ought to try. As simplistic and silly as it sounds, restarting a router/Wi-fi modem clears a few clogs within the system. Restarting a router after letting it be switched-off for about a minute can actually work wonders if you have been facing intermittent WiFi issues. While you are at it, you might also want to restart Wi-fi on your iPhone. You just have to turn off the toggle, wait for a minute and then switch it on.
Have got a case on your iPhone. That could be interfering with the WiFi reception. No case is designed to block the Wi-fi – at least, not consciously. Since most cases are TPU, plastic or silicone rubber, they have no effect on the reception but if you’re using a case that goes a bit beyond these materials, it might cause an issue. The easiest thing to do, in this case, would be to remove the case-cover off your iPhone and test the WiFi reception
Setup DNS Manually on iPhone/iPad
Setting up a manual DNS in iPhone’s WiFi preferences is known to create a massive difference. Sometimes, it’s not about the Wi-fi reception at all. Technically, by altering the DNS setting, we’re not boosting the WiFi reception. We’re only going through some other DNS to fetch data from the internet.
Interference from Neighboring Signals – Change the Channel
One of the biggest issues in a neighbourhood with lots of WiFi networks is interference. It’s hard to exactly quantify or measure the impact of neighboring Wi-Fi signals but your iPhone’s Wi-fi latching technology works this way: it pings for the strongest signal and catches on to it.
The strong 2.4 GHz signal that most routers operate on a lot of channels. If you are in the US, you can pick a channel between 1, 6 and 11 or if you’re outside, pick from 1, 5, 9 and 13. There are softwares that detect Wi-fi signals from your neighborhood and tell you what channel these are on. You can then configure your WiFi to stream through another channel.
Get a New Router
Although the possibility of your router being the source of all WiFi troubles on your iPhone is very less, it does happen. A new router can fix this.
Routers usually don’t go berserk. In the off-chance that they do, it’s hard to figure out if it’s the router that’s causing the poor signal issue. One efficient way of finding it out is to use a spare router and test it for a couple of days. If WiFi strength is good and stable on the iPhone using the alternative router, you can say that your router has got problems.