My phone's network ic was changed but I'm not getting internet speed

Here’s a possible reply for the iFixit question:

Hi,

It sounds like the network IC replacement might not have been done perfectly, or there could be additional issues affecting your phone’s internet speed. Here are some things you can check and try to resolve the problem:

• Recheck the Replacement: Ensure that the network IC (baseband IC) installed is the correct one for your phone model and is not a generic or incompatible part.
• Check for Proper Soldering: Poor soldering or improper installation of the IC can result in weak or unstable network performance.

• Try using a different SIM card from the same or another carrier to rule out SIM card-related issues.

• The phone’s antennas may have been damaged or improperly reconnected during the repair process.
• Ensure the antennas are securely attached and free of any corrosion or damage.

• Ensure your phone’s operating system and baseband firmware are up-to-date. Some repairs might require recalibration or re-flashing of the firmware for the new IC to function optimally.

• Reset your network settings to ensure there are no lingering configurations causing issues:
  • On most phones: Settings > General > Reset > Reset Network Settings.
• Note: This will erase saved Wi-Fi networks and passwords.

• Use apps like Network Signal Info (available on Android) or check field test mode (on iPhone: dial 3001#12345#) to evaluate your network signal strength.
• Weak signal strength could indicate an antenna or IC issue.

• If the issue persists, take the phone back to the repair technician and explain the problem. They may need to:
  • Recheck the installation.
  • Replace the network IC with a higher-quality part.
  • Inspect the antennas and other related components.

• Some phones require hardware calibration after replacing the network IC. This process typically needs specialized equipment and should be performed by a qualified technician.

If these steps don’t resolve the issue, it might be worth considering a second opinion from a more experienced repair technician. Let us know how it goes!