# O2 Mobile > Mobile banking for Old Second National Bank customers to manage accounts and transactions. (iPhone/iPad app by Old Second National Bank.) - Source: https://appshunter.io/ios/app/o2-mobile/id848603624 (this page in markdown: same URL + `.md`) - Developer: [Old Second National Bank](https://appshunter.io/developer/456984719) - Category: Finance - Price: Free - Rating: 1.70/5 from 43 App Store ratings · 24 written reviews indexed - Age rating: 4+ - Requires: iOS 11.1 · 44 MB - Languages: American English - Released: 2014-04-02 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/o2-mobile/id848603624/reviews.md ## What is O2 Mobile? O2 Mobile Banking is a mobile banking solution offered as an option through Online Banking. This free solution allows Old Second National Bank customers to check balances, perform transfers between accounts, make deposits, enter bill payments and check other basic account information. Visit www.oldsecond.com for more details. Connectivity and usage rates may apply. Contact your wireless service provider for plan details. ## Key features - Check account balances - Perform account transfers - Make mobile deposits - Enter bill payments - View basic account information ## Recent user reviews (10 of 24) All indexed reviews: https://appshunter.io/ios/app/o2-mobile/id848603624/reviews.md ### 2/5 — Can’t see checks that were written out *2020-07-21, version 4.34.34* This app was great, but, suddenly, when I click on the check icon, I get a blank screen. In the past, I could click on a written check that was posted, and I could see a picture of the check, now I can’t; it’s a blank screen. ### 1/5 — App glitches with mobile deposit *2019-12-30, version 4.34.34* The app no longer works for mobile deposit since the newest OS update. Please have developers look at the issue so it works properly again. ### 1/5 — Never tells the right amount *2019-11-02, version 4.34.34* I get so confused with the amount of money I have in my bank account and then a week or couple of hours or days later it tells me the right amount can you please fix that ### 1/5 — Garbage *2019-03-07, version 4.28.26* Stop kicking me out of the app. Stop telling me my passcode may be required to enable Face ID. I added my Information to passwords and I still get locked out. Fix your app. ### 1/5 — Very bad app *2019-03-04, version 4.28.26* Just poor functioning ### 1/5 — Horrible *2019-01-19, version 4.19.9* This app is horrible. About 3 weeks ago when i tried to log in i was told my password was incorrect, i was NOT typing the wrong password. I eventually had to have the password reset. Now i have been using my new password and its been perfectly fine untill 2 days ago, now my new password is being denied and it wont let me log in and check my balance. This happens ALL THE TIME. This was not the first time it happened. Its ridiculous you really need to fix this ap because i cant log in and check my balance when you app keeps saying my password is wrong when it isnt. ### 2/5 — Bummer *2019-01-03, version 4.19.9* Won’t let me log in . Says wrong I’d or password. And I know it’s right.... ### 1/5 — New mobile deposit system is awful *2018-08-17, version 4.19.9* Says must put mobile deposit which I did and still don’t work. What idiot came up with this should be fired on the spot. ### 1/5 — What a piece of garbage *2018-07-14, version 4.16.34* It’s great to have—IF IT WORKS. I can’t get SUBMIT to go anywhere or do anything. What good is the app if basic options like Deposit a Check don’t work? They need to check their app from top to bottom. ### 1/5 — Terrible *2018-06-07, version 4.16.34* Terrible app, just like the bank. Look elsewhere for anything better. Shouldnt be too hard to find ## Frequently asked questions about O2 Mobile ### What can I do with the O2 Mobile Banking app? This app allows Old Second National Bank customers to perform various banking tasks. You can check your account balances, transfer funds between your accounts, make mobile deposits, and enter bill payments. It also provides access to other basic account information. ### Is O2 Mobile Banking free to use? Yes, O2 Mobile Banking is offered as a free solution for Old Second National Bank customers. There are no direct costs associated with using the app itself for its core banking functions. ### What are the requirements to use O2 Mobile Banking? To use O2 Mobile Banking, you must be a customer of Old Second National Bank and have access to Online Banking. Connectivity and usage rates from your wireless service provider may apply, so it's recommended to check your mobile plan details. ### How do I make a deposit using the app? The app allows you to make mobile deposits. While the description doesn't detail the exact steps, typically this involves taking photos of the front and back of your endorsed check through the app's deposit feature. ### Where can I find more information about O2 Mobile Banking? For more details about O2 Mobile Banking and its features, you can visit the official website at www.oldsecond.com. This website will provide comprehensive information about the service and how to get started. ## Version history (last 5 releases) ### 4.34.34 — 2019-09-05 Minor bug fixes and performance improvements. ### 4.30.90 — 2019-04-08 Improved functionality Added support for iOS 12 ### 4.28.26 — 2019-02-05 Improved functionality Enhancements for iPhone X support ### 4.19.9 — 2018-08-14 Improved functionality Enhancements for iPhone X support ### 4.16.34 — 2018-05-23 Improved functionality ## Apps similar to O2 Mobile | App | Rating | Price | Category | | --- | --- | --- | --- | | [First State Bank IL Mobile App](https://appshunter.io/ios/app/first-state-bank-il-mobile-app/id1525783632) | 4.8 (1,038) | Free | Finance | | [ACB&T Commercial](https://appshunter.io/ios/app/acb-and-t-commercial/id1544129335) | — | Free | Finance | | [ONPointe Mobile](https://appshunter.io/ios/app/onpointe-mobile/id1458754268) | 2.1 (13) | Free | Finance | | [AME Bank](https://appshunter.io/ios/app/ame-bank/id984500218) | 2.5 (14) | Free | Finance | | [MyResourceBank](https://appshunter.io/ios/app/myresourcebank/id948325816) | 4.8 (1,254) | Free | Finance | | [Abri Credit Union](https://appshunter.io/ios/app/abri-credit-union/id1087912024) | 4.6 (1,542) | Free | Finance | ## More apps by Old Second National Bank - [Old Second Mortgage](https://appshunter.io/ios/app/old-second-mortgage/id1106923833) - [O2 Business Deposit](https://appshunter.io/ios/app/o2-business-deposit/id1439962833) - [O2 Digital Banking](https://appshunter.io/ios/app/o2-digital-banking/id1500046724) - [Corporate O2](https://appshunter.io/ios/app/corporate-o2/id1579112610) - [Old Second Trust Online Access](https://appshunter.io/ios/app/old-second-trust-online-access/id6742758090) All apps by Old Second National Bank: https://appshunter.io/developer/456984719 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*