The most common issues however are often discussed upon Apple’s user forum and the most common problems found regarding networks in iPhone 7 plus are:

• iPhone 7 plus gets down to 0 network bars randomly
• Network quality drops from 4G to 2G/3G.
• Cannot access metered/Cellular internet connection through Carrier or the SIM Company.
• Network never reaches the full level.

These common issues however can be a network receptor hardware glitch of the iPhone 7 plus. To resolve these Apple recommends its iPhone 7 plus users some DIY (Do it yourself) fixes as a home remedy, such as:

• Toggle Airplane Mode on and off to reset the previous network settings and cache.
• Remove your sim card and reinstall it again. (requires a restart of the device)
• Set up the internet for your phone if you’re facing internet issues through the network for the first time.
• To set up go to- Settings > Mobile Data > Mobile Data Network

then:

• Insert APN (Access Point Name) provided by your carrier 
• Insert Username (provided by your carrier)
• Insert Password (provided by your carrier)
• Save the settings by pressing the left arrow at the top.
• Make sure your Data connection is on after setting up the network before you access the internet.
• Install carrier update for your iPhone (Check-in Settings > General > About)
• Restart your iPhone
• Soft reset your iPhone

If none of the solutions work for your iPhone, you might need your phone to get checked by a professional technician. Here at ifixit bd, we have dedicated and experienced technicians who specialize in resolving your network issues in your iPhone 7 plus. ifixit bd has 4 service points which are located in points around Dhaka, Bangladesh.

We offer service for your iPhone like no one else does. We provide our customers with...

• Free error diagnostics
• Quick servicing
• 30-days warranty on applicable repair and replacement services
• Money-back guarantee on applicable circumstances.

So, visit your nearest ifixit bd service point with your network issue of iPhone 7 plus or any issues on any iPhone model for that matter. And we guarantee, you'll get the best repair service available.