So-net prepaid SIM cards provide visitors to Japan with 1 GB and 2.2 GB 30-day and 3 GB 60-day high-speed data packages for smartphones over the NTT Docomo LTE and 3G networks. Cards cost ¥3,000 for 1GB, ¥4,000 for 2.2 GB, and ¥5,000 for 3 GB. Extra data can be purchased for ¥1,620 for 200 MB, ¥2,160 for 500 MB (both have 30-day limits), and ¥3,065 for 1 GB, which has a 60-day limit. All prices include tax. Cards are available in standard, micro, and nano sizes.