iPhone 4s can't access cellular data network

[SE78]

After trying to change APN settings to no avail I noticed that when I go to Settings-General-About, I see that my network is public mobile and my carrier is TELUS 16.0. My wife's iPhone SE formerly on TELUS  changed over when she ported her number and put the new public mobile SIM card into her phone.  Is this why I can't access cellular data? How do I change the carrier on a 4s? How do I get cellular data? 

[RobertQc]

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@slash407 wrote:

people still using iphone 4? u deserve a reward for that

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@slash407What are you using and what is the reward?

[uma1016]

https://www.kimovil.com/en/where-to-buy-apple-iphone-4s-16gb

check this site according to its info, this phone iPhone 4s has bands 

• B2 (1900)
• B5 (850)                both 3g bands supported by public mobile

and also the iPhone 4s has bands

• B2 (1900)
• B5 (850)          both 2g bands 

[SE78]

Thank you! It worked! 

[Anonymous]

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@SE78 wrote:

Thanks for responding - when I go to cellular data network the only option is to for personal hotspot with APN Username Password options. No MMSC or MMS Proxy options. 

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The link that mimmo provided earlier should have everything you need.

[SE78]

Thanks for responding - when I go to cellular data network the only option is to for personal hotspot with APN Username Password options. No MMSC or MMS Proxy options. 

[SE78]

iPhone 4s model MD128C/A 

[Alex888]

@SE78 What is the exact model of your iPhone 4?

[sunflowershine]

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@SE78 wrote:

After trying to change APN settings to no avail I noticed that when I go to Settings-General-About, I see that my network is public mobile and my carrier is TELUS 16.0. My wife's iPhone SE formerly on TELUS  changed over when she ported her number and put the new public mobile SIM card into her phone.  Is this why I can't access cellular data? How do I change the carrier on a 4s? How do I get cellular data? 

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@SE78 

Here’s how to set up data in 3 steps:1) Tap:

• Settings
• Cellular
• Cellular Data Network

2) Input this info:

• APN: SP.MB.COM
• MMSC: http://aliasredirect.net/proxy/mb/mmsc
• MMS Proxy: 74.49.0.183) Leave all the other fields blank. Just hit save, reboot, and you’re good to go!

[mimmo · Accepted solution]

this link might help https://productioncommunity.publicmobile.ca/t5/Phones-Hardware/FYI-iOS-and-APNs/m-p/323118#M24562