Sudden slow wifi
I just got another smarty unlimited broadband sim added to my first one in the same household. I got two tp-link router and to start with both broadband worked ok. From the second day onwards both broadband speed got really slow. I tried to switch one off and it made no difference. I contacted smarty before doing this and they told me it would be ok to have two sim cards but clearly it is not. How do I solve this? Before the speed was ok, not amazing but ok. Now is really slow and even searching for a simple thing online takes ages for the page to load