raksrules
Oracle
I have iPhone 6S bought from US and its model number is A1688. It was originally Verizon Model which means it was sort of Unlocked (LTE/GSM Part). I have been using the phone on Vodafone and it always worked fine. Even 4G Part (except where network was crappy). When 4G wasn't good, it would fallback to 3G.
I recently ported my number to Airtel as it is supposedly having better network at my home, office and the route between. But with my iPhone 6S, whenever the phone is connected to Band 40, most of the times, the 4G does not work properly. The signal shows as 4G but actual apps / websites etc don't work / open. When connected to Band 3, it works fine. I checked this by entering field test mode in my phone. Whenever, while using the phone, even with strong 4G network, I found that actual stuff doesn't work, I would go into field test mode and see the band. This is how I deduced that Band 40 isn't working properly while 3 does.
Now, for a day, I put the SIM card in my iPhone 5S which is originally Boost Mobile (from US) and it has been unlocked. This is model# A1453 and does not even have Band 40 but does have Band 3. I tried the phone for entire day and the 4G on it was strong at almost all the places and it sort of never failed on me. I reckon, my phone was always connected to Band 3 as it does not have Band 40 anyways.
So what exactly is the problem here and why I am facing deteriorated performance of 4G on my iPhone 6S when connected to Band 40. To top it, I believe Airtel has shut their 3G network so my phone directly goes to NO data mode (not even edge most of the times) as there is no 3G fallback. I don't really intend to buy a new phone as my 6S still works well and I want to avoid using the 5S.
I recently ported my number to Airtel as it is supposedly having better network at my home, office and the route between. But with my iPhone 6S, whenever the phone is connected to Band 40, most of the times, the 4G does not work properly. The signal shows as 4G but actual apps / websites etc don't work / open. When connected to Band 3, it works fine. I checked this by entering field test mode in my phone. Whenever, while using the phone, even with strong 4G network, I found that actual stuff doesn't work, I would go into field test mode and see the band. This is how I deduced that Band 40 isn't working properly while 3 does.
Now, for a day, I put the SIM card in my iPhone 5S which is originally Boost Mobile (from US) and it has been unlocked. This is model# A1453 and does not even have Band 40 but does have Band 3. I tried the phone for entire day and the 4G on it was strong at almost all the places and it sort of never failed on me. I reckon, my phone was always connected to Band 3 as it does not have Band 40 anyways.
So what exactly is the problem here and why I am facing deteriorated performance of 4G on my iPhone 6S when connected to Band 40. To top it, I believe Airtel has shut their 3G network so my phone directly goes to NO data mode (not even edge most of the times) as there is no 3G fallback. I don't really intend to buy a new phone as my 6S still works well and I want to avoid using the 5S.
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