Using this antenna is easy. Just connect it to your LTE device that operates within the specified frequency bands. When using it with our LTE Cat M1/NB - IoT Shield, simply attach it according to the shield's instructions. As for precautions, avoid bending the antenna too much as it might damage the flexible circuit. Keep it away from sources of strong electromagnetic interference. For maintenance, gently clean the antenna with a dry, soft cloth if it gets dirty. Don't use any harsh chemicals or abrasive materials, as these could harm the antenna's surface.