Has anyone noticed a weak wifi signal on the Jetstream? This tablet compared to my Galaxy Tab 10.1 is weak. My 5G "n" network shows up as full bars on my GTab whereas on my Jetstream I get 1 to 0 bars of signal strength. I like to watch a lot of youtube and when I switch to my "g" network the youtube app has to buffer constantly which is unacceptable to me. Any suggestions?