My phone has 16GB of on-board storage and after 12 months of use all that space has been taken up with Images, Videos, Apps and Cached data. Needless to say certain Apps stopped updating because of the lack of available space and the odd one or two were refused to operate, this lead me to delete my least favourite Apps and photos (although i really wanted to keep them). It was clear i needed to gain extra storage space and fast without splashing out on buying a new phone since my existing phone was fast enough and did everything i wanted it to do.The mobile i currently use for personal stuff (Motorola Moto G 3rd Generation) has an Micro SD card slot offering support for up to and including a 32GB High Speed Micro SD card. I did wonder about saving a few pounds and getting the 16GB version but decided on the 32GB as it gives me peace of mind plus i'm sure as time goes on and apps get bigger the extra space could well be used. Literally i inserted the micro SD Card into the phone which it instantly detected. The phone then formatted the card and asked if i wanted to use the card as "portable" or "internal" storage. If you plan on using the card as expanded storage for your phone then ensure you select "internal". Afterwards the phone then asks if you want to transfer all photos, videos, background system files and indeed a few apps.In the case of my phone it instantly transferred across some 7.5GB of data. After the automatic process was done i actually went into the app settings tab and was able to move more apps across to the card like Twitter and Snapchat to save even more space.The Speed of the Micro SD Card i chose is as fast as the built in internal storage. You literally notice no difference in speed although i will say since freeing up a lot of internal space the phone seems to load applications faster. It may only be specific to my phone but all photos, videos and even new apps will now automatically be stored to the SD Card rather than internal storage (except certain apps who's developers demand the app be saved to your phones default storage) It's actually 50/50 as to which apps can be moved back and forth and which can't. Some like Google Chrome and Whatsapp must remain on the default storage but a lot of non proprietary apps can be moved.Included in the pack is an Adaptor, this adaptor can be used for transferring the contents of the Micro SD Card directly to a PC or other device. That said in the age of Bluetooth and email it won't be getting much use if any at all from me. Nevertheless i appreciate it being included with the Micro SD Card. If you have an SD Card reader on your PC, Laptop or TV and aren't capable of operating Bluetooth then the adaptor might be a handy inclusion.VERDICT: The card itself is tiny, the size of a nano sim card and incredibly lightweight so be extra careful when handling it and do not touch the golden teeth as any finger oils can stop it working properly. I specifically checked with my mobile phone manufacturer before i ordered this Micro SD Card to ensure it was compatible. They also recommended the speed rating and said it be no slower especially if being used as internal Storage. I couldn't be happier as now all my apps are up to date and i have over 6GB of internal storage left for new apps that demand to be installed on the default storage and over 22.5GB of storage on the mSD Card for photos, videos and even apps that can be moved. Never will i have to worry about taking pictures of videos again at an event, the speed of the mSD Card is as good as the built in flash storage of the phone and when i chose to get a new phone in a few years i can easily carry this mSD card forward. HIGHLY RECOMMENDED especially if you want to expand your phone storage, just ensure it's compatible before you order. On a side note Packaging and delivery was excellent from Amazon.