Hello Dankutnenko,
Welcome to the community!
Sorry to hear your LTE data speeds are not to your expectation. However, there are many things which can affect LTE speed -- strength of signal, network congestion, LTE band(s) or frequency(-ies) to which your device is connected, etc.
I understand the coverage maps show your area is fully covered. However, those maps are only approximate. Depending on where you are located in Burnaby, some areas have fewer cellular towers:
~taken from here.
I also understand your device might show fairly good cellular signal. That's where the actual bands/frequencies to which your device connects might play a part. The different bands/frequencies have different characteristics. While the lower frequencies (ie 700 MHz) are able to travel farther and penetrate deeper into structures than higher frequencies (ie 2600MHz)(see graphic here), there is a trade-off. Unfortunately, that increased travel distance and penetrability coincides with a smaller bandwidth (see table here). Smaller bandwidth would result in slower data speeds.
If your location can only receive adequate signal from the lower frequencies, that could account for why your data speeds might be lower than expected (fairly good signal & low bandwidth). It could also explain why your device does not frequently avail of carrier aggregation (LTE-A or LTE+)(see here). If the area is unable to receive adequate AWS (band 4 or 1700/2100MHz) signal, it would not be available to aggregate.
As well, that all assumes your device has those compatible bands/frequencies. If your device does not have compatible higher frequencies, that could also account for your lower than expected speeds. You can view the compatible bands/frequencies here.
In addition, do you use a virtual private network (VPN)? Those services can reduce data speeds significantly.
You might consider testing different locations to see if that might improve your data speeds. If your speeds do improve at different locations, that might strengthen the notion above. If that is the case, there is unfortunately not much to be done to improve signal. One option would be to consider signal boosters to try to improve the higher frequencies in the area. Alternatively, the other provider in the area might have cellular towers better suited to your location.
Hope this helps 😀
Cheers
