I got my wife a nano SIM Card from Koodo for her unlocked iPhone 5. However, she never get the LTE signal on her phone. Below are more information regarding the phone: - Phone was purchased unlocked from Apple Canada. - My home has LTE coverage. I tried replacing her SIM Card with another friend Koodo Prepaid SIM Card (Purchased around 1 year after Nano SIM Card first available) and the phone got LTE signal. - LTE is enabled and I did try the network reset and all other test mentioned in this forum. - Nano SIM Card was purchased when iPhone 5 first came out (first time Nano SIM Card was available). My question is whether there is a known issue with the first batch of the Nano SIM Card where it is not able to connect to LTE network? Thank you.