|Nexus 5 home screens showing a connection to docomo LTE|
The answer is probably not.
If you just walked into a docomo shop and bought a Xi LTE phone, you are 99.9999999% using their "sp mode" ISP. However, the APN used with this ISP is filtered by the phone's IMEI number, with only numbers specifically whitelisted by docomo able to use this ISP.
Many of you may not even realize that Docomo has different ISPs, since the mobile carrier typically is the ISP. There was at one point a good reason for it, well sort of. Docomo used a separate ISP for data devices, like the old USB dongles or other devices that would tether a computer to their network. This did two things:Therefore, you will need to change your ISP from sp-mode to docomo's other ISP, Mopera U. sp-mode comes with extra services, like sp-mode mail that provides an @docomo.ne.jp email address. You will lose this email address with a Nexus 5. If you want to continue having an email address, you can continue having one @mopera, but honestly, with gmail, there is really no need for either an sp-mode or mopera mail account.
- made it easy to charge a premium price for that service and
- segregated devices that were potentially able to eat a huge chunk of instantaneous bandwidth from the typical customer.
There are two basic choices of mopera plans:
|N5 using the mopera.net APN, which is preconfigured.|
To change your ISP, I understand this can be done online through the my docomo page. If you can't figure out how to do that, you can just go to a docomo shop and get it done. You really don't need to tell them why you are doing it, and you don't even need to bring the phone.
NEVER change you ISP from sp-mode to mopera if you have an unrooted, unhacked, docomo Xi phone. Docomo firmware changes the APN when activating tethering, and this APN is incompatible with Mopera U. Data will work fine but you won't be able to tether. The Mopera U ISP and APN is only for unlocked, non-docomo phones.
Once you have changed the ISP to Mopera U, put your SIM card in the shiny new Nexus 5, then set mopera.net as the APN. It will most likely happen automatically. Alternatively, you can use open.mopera.net, which removes some filtering.
[List of docomo APNs.]
Here are some various screenshots from the mobile networks settings
|This is the Non-North American version, and it can see the other carrier's networks|
In the case of KDDI, it is seeing their Band 1 LTE data network (voice not compatible)