@Tracy3103: Sorry to hear that you're experiencing this issue. Following the factory reset, did you re-install any third party applications to the A20e? If so, try deleting those apps temporarily, then restart the phone to see if you notice an improvement.
@Tracy3103: Thanks for confirming. If the problem has persisted following a factory reset, and there are no 3rd party apps installed on the device, then I recommend reaching out to our Help Desk via the link below, where an advisor will be on hand to assist you further, and arrange a warranty inspection. Apologies for any inconvenience this may cause you.
@Tracy3103: If the phone is under 24 months old, and inside the warranty period, then the inspection service will be free of charge. If the engineer does deem the device to be out of warranty due to physical/liquid damage, or an unauthorised modification, then a quotation will be issued, allowing your the chance to opt in or out of the service. By opting out, the phone will be returned to you unrepaired at no cost. I hope this helps.
@Tracy3103: A triangle with 2 arrows facing up and down means that you have reached the data limit set by your service provider. You might also have Data Saver switched on in Settings > Connections > Data Usage > Data Saver.