Slow iPhone Wi-Fi? Speed Up iOS Wireless Connections with Faster DNS Servers
If your iPhone Wi-Fi connection seems inexplicably slow, particularly when having moved from one wireless network to another, try manually setting custom DNS servers. This speeds up the response time and your wireless connectivity in general.
For the best results and to find the fastest possible DNS for your location, you’ll want to use a tool in Mac OS X, Windows, or Linux like NameBench, a free utility to help find the fastest DNS server for your geographical location. Once you determine which is the fastest server for you, you can then change the DNS settings on the iPhone as appropriate:
- On a Computer, find the fastest possible DNS Server using NameBench – make note of the DNS servers IP that are selected by the NameBench benchmark service
- On the iPhone experiencing sluggish wifi, open the Settings app and go to ‘Wi-Fi’
- Tap the blue arrow alongside the wi-fi network name you are connected to
- Tap the numbers next to “DNS” to change them to the settings that were found to be the fastest through NameBench
This is where you’ll want to set your DNS as determined by NameBench. You can obviously use other settings but the whole point of this is to speed up your internet service by using the fastest servers as determined by NameBench.
Modern iOS versions including iOS 7 and iOS 8 have the following appearance in DNS setting:
This is what the DNS settings panel looks like in older versions of iOS like 6.0 and before:
The function is the same, the appearance is different.
This is a particularly worthwhile tip for those using older iOS devices like the iPhone 2G and iPhone 3G devices, but it can also make a noticeable difference for newer hardware including any iPod touch, iPhone, or iPad.