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To see 4G+ on Rain you would need to use it in a High end smartphone like the Samsung S8, S9, S10, S20 ect and for Routers the Huawei H112-370 does support that carrier aggregation combination too on 4x4 mimo with internal antenna.
My S20+ usually shows 4G+ on CellCThe thing is with LTE-A there does not seem to be a SET standard where this needs to happen to be LTE advanced.... So currently service providers with 20MHz bandwidth claim they have LTE-A when they don't.
Samsung considers anything with 20MHz or higher and cat 6 LTE as LTE-A[4G+/LTE+]
Huawei and most Chinese phones and devices consider any LTE that allows carrier aggregation irrespective of bandwidth capabilities LTE-A.
So here is a good example.
Rain band 38 - 2600MHz TDD has 20Mhz bandwidth. So they are calling this LTE-A
Cellc band 1 - 2100MHz FDD has 5MHz bandwidth and Band 3 - 1800MHz FDD has 10Mhz bandwidth. Both of these are just normal LTE but Cellc aggregate these two giving a total of 15Mhz bandwidth and so devices like Huawei show them as Having LTE-A or 4G+
Very interesting to not that both Rain and Telkom has 20MHz in the 2600MHz and 2300Mhz frequencies respectively so they would in most cases provide better speeds than Cellc but Cellc has carrier aggregation so even if they are slower they have LTE-a while Telkom and Rain only have LTE.
This is also the main reason why NO ONE on Cellc with any Samsung smartphone will see 4G+ because their total aggregated bandwidth is just 15MHz while Samsung require the network to have atleast 20Mhz and that is why I say there is no SET standard for what LTE-A really is.
IMO carrier aggregation + minimum 20Mhz bandwidth should LTE-A not either of those two.
IF Rain can get the carrier aggregation right between their two bands band 3 and 38 then they would probably have the best LTE-A network in SA as far as I know MTN and Vodacom does not own that much spectrum and even with refarming other bands the total will not come close to iBurts/WBS/Rain's 30Mhz total. People on Rain - congestion dependent obviously - will see speeds of over 100Mbps in most cases.
Yeah probably their their updated software that now shows 4G+ even if they aren't getting to 20MHz it can also be their MTN roaming. This was posted in 2017 WAAAAAY before Cellc had a roaming agreement with MTN and before they eventually had Samsung modify the software.My S20+ usually shows 4G+ on CellC