I have just upgraded my device (got a new sim) and did a sim swap online which worked.
Issue I have is I have the 4g symbol on my phone but the speed is slow below 4mb download and 5-6 upload when using a speeed test app.
when i switched to o2 3g using the network operator seach the speed sget upto 17mb donwload..... upload 1-2mb
Would this be an issue with my device or does something need doing to my account/sim...?
Any help appreciated
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