I know that you can access and not only control but use Pi-hole as if you are at home from anywhere. I have some questions and concerns about doing such. What security risks are shown by doing that? How can I eliminate the risks and make it as secure as possible? What is the safest way of doing this? How would I be able to do it? Will this slow down mobile data speeds (upload, download, ping, jitter, and such)? What is the performance impact or difference? Internet wise at home is 5 down 1 up. Mobile data here can peak and average is 35 both ways. Ping is in the 50s for both of them and packet loss and jitter is none at the most of times (depending on phone location and cell tower signal). My phone is really slow and old and the less ads and bloat it has to load the better. It struggles enough to load YouTube on the app itself.
You mobile download speed will be limited by your home internet upload speed, since anything downloaded on the remote client is being uploaded by your home network. You can avoid this by using the split tunnel option discussed in each of our guides. With split tunnel, only the DNS traffic goes back to your home Pi-hole, while the data traffic stays local to whatever network your client is using at the time.