Is it possible to enable certain LTE bands on Lumia 640?
2015年12月13日 — As far as I know, Lumia 640 supports all LTE bands, but they might differ in certain models (RM-1072 vs RM-1073). It'd be great, if there was a way to enable LTE 3 and …
Lumia 640 XL versions | Windows Central
2015年6月16日 — So here's the question: what are all the versions of the Lumia 640 XL, and what are the differences among them? According to Microsoft, there are 4 versions: 1) 640 XL …
Store is not working in lumia 640 | Windows Central
Apr 25, 2016. #2. It works for me on 640 XL, but I have already had some problems in the past and back then the problem was in the time I've set. If your time is correct, then maybe you …
De-brand your AT&T Lumia 640 LTE. | Windows Central
2016年1月17日 — Another success story here - so far so good with my AT&T 640, now running the TMo firmware. Only stumble I had were errors on my x64 Win10 PC with iutool: ERROR: …
Lumia 640 and Fitbit Charge HR | Windows Central
Apr 24, 2015. #1. Hi, my Nexus 5 refused to boot up a month after the warranty had expired, and I replaced it with Lumia 640. However, for some reason my Fitbit Charge HR doesn't work with …
Lumia 640 XL bricked, how can I fix it? | Windows Central
2015年7月22日 — Lumia 640 XL bricked My lumia 640 XL bricked when I tried to upgrade to the preview builds. There is no response whatsoever even after pressing volume down + power. …
Lumia 640 wont turn on unless on charger, batterry/wdrt/usb issues
2016年9月20日 — Lumia 640 win 10. stuck on low charge screen wont turn on off charger. So one day I reset my phone due to my phone slowing down, and it would not turn on. For info …
What is the difference between the 640 for AT&T, T-Mobile,
2014年7月24日 — The AT&T Lumia 640 does NOT have band 12 LTE like the unlocked version or the T-Mobile version. AT&T sucks for doing that. They locked it out of the firmware so if you …
Lumia 640 XL Dual SIM All Product Codes (RM-1067)
2015年5月1日 — Product Codes Nokia Lumia 640 Dual SIM RM-1077. 059W9B6: RM-1077 PWBASSY LIGHT SWAP ENGINE GLOBAL. 059X0N1: RM-1077 GLOBAL SWAP. 059X137: …
Adding Wireless Charging to the Lumia 640 | Windows Central
2015年6月27日 — This is really great because with this add on my 640 does nearly EVERYTHING my 1520 did... NFC, Display Memory (if a little limited), HD screen, micro sd expansion, etc...