You can find many good tips on how to surf the Internet faster using various iPhone Web browser apps. But if your Internet connection is weak or flaky, then all that advice amounts to little. The speed and strength of your Internet connection are affected by several variables, some of which you can control. In fact, there's a lot you can do to accelerate your access and use of the Internet.
When you use your iPhone on diverse tasks over an extended period, it can begin to perform erratically and slowly. To correct this, shut down and restart your device. Double-press its "Home" button and flick all open apps off of your Multi-tasking Panes. Within your Settings app, toggle the "Airplane Mode" switch to "Off" -- and then "On" again after three seconds -- to reboot your iPhone's wireless radios. Also, turn your Wi-Fi router off and on again after 30 seconds.
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Run your iPhone on the latest software from both Apple and your carrier, because they'll have resolved known Internet speed-impeding bugs. Tap "Settings," followed by "General." Then, check "About" and "Software Update" for updates and follow the prompts to download them. Update your wireless router's software also; consult its user manual or manufacturer for assistance.
Try resetting your existing Internet connections to improve Internet speed. For instance, remove and reinsert your iPhone's SIM card to refresh your cellular connection. Boost Wi-Fi service by tapping "Settings | Wi-Fi | Network Name | Renew Lease | Renew." Alternatively, tap "Forget This Network" instead of "Renew Lease" and then rejoin the network you just forgot. A more comprehensive reset involves removing current Wi-Fi and Virtual Private Network connections -- along with their passwords -- and re-establishing them afterward. Tap "Settings | About | Reset | Reset Network Settings" and erase profile-installed VPNs by tapping "Settings | General | Profile | Profile Name | Remove."
Improve Wi-Fi Service
The farther you are from a private or public Wi-Fi network's base station, the weaker your iPhone signal and the slower your Internet speed. So, move closer to the router and no more than 115 feet away. Steer clear of metal objects, microwave ovens, baby monitors, cordless phones and similar items that can electromagnetically interfere with your Wi-Fi signal. If possible, enhance or augment your router's capabilities. For faster throughput, upgrade to 802.11n networking and dual-band transmission on the 5GHz and 2.4GHz wireless bands.
Use Fast Cellular Connections
Your carrier offers several cellular options to connect to the Internet. To know the strength and kind you have available, check the symbol on your iPhone screen's upper-left corner. From dreadfully slow to blazing fast, cellular options include GPRS or 1xRTT, EDGE, 3G, 4G and LTE. Of these, 4G and LTE can often meet or beat the Internet speed you enjoy over Wi-Fi. So it pays to use them, especially in areas where available Wi-Fi connections are flaky. To force 4G/LTE use in these situations, tap "Settings," followed by "Wi-Fi" and then turn the "Wi-Fi" switch to the "Off" position.