If you have an iPhone, there is a way to make your own "Contact Card" in the Contacts app: I normally add my cell, email, and company there; list your "Company" as "Investor".

I now want to transfer the property into my Series LLC but I don't know if I need a separate EIN for my first property series (cell).  

You could even get cell phone internet for close to $20/month. 

Is it accurate in terms of finding people's cell phone numbers?

We take it a step further and even attach the owners email and cell phone number.

Response to #1: Some lenders allow for layered entities while others want warm bodies/natural persons to be direct managers.

I am not one of those.I do personal communications with all the guests and they have my cell so they can call or text.

i bought property at tax sale auction in Dekalb county Georgia, over 12 months ago, now i am doing barment,  i published ad news paper,  i sent 30 days notices to ex owners and all parties might have interest,  and the property now it empty / unoccupied.my question is: if 30 days notice expired and no body redeemed, can i enter the property and start to fix / repair the property, and rent it??

Given my geographic inability to personally manage the properties and long stretches of not having cell or internet service, I'm calculating 3rd party property management into all my deals.

I'll take a cell phone but no computer.